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2121001200122 = 272291009739649
BaseRepresentation
bin11110110111010101100…
…001011110100111111010
321111202200012221200211112
4132313111201132213322
5234222302301400442
64302212520400322
7306144246510200
oct36672541364772
97452605850745
102121001200122
11748569979422
122a30930160a2
13125017cb8c3c
147492ab77070
153a28ad00082
hex1edd585e9fa

2121001200122 has 48 divisors (see below), whose sum is σ = 3832348545000. Its totient is φ = 876784656384.

The previous prime is 2121001200121. The next prime is 2121001200133. The reversal of 2121001200122 is 2210021001212.

It can be written as a sum of positive squares in 4 ways, for example, as 2101893943681 + 19107256441 = 1449791^2 + 138229^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2121001200097 and 2121001200106.

It is not an unprimeable number, because it can be changed into a prime (2121001200121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2497754 + ... + 3237402.

Almost surely, 22121001200122 is an apocalyptic number.

2121001200122 is a deficient number, since it is larger than the sum of its proper divisors (1711347344878).

2121001200122 is a wasteful number, since it uses less digits than its factorization.

2121001200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740703 (or 740696 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121001200122 its reverse (2210021001212), we get a palindrome (4331022201334).

The spelling of 2121001200122 in words is "two trillion, one hundred twenty-one billion, one million, two hundred thousand, one hundred twenty-two".

Divisors: 1 2 7 14 29 49 58 98 203 406 1009 1421 2018 2842 7063 14126 29261 49441 58522 98882 204827 409654 739649 1433789 1479298 2867578 5177543 10355086 21449821 36242801 42899642 72485602 150148747 300297494 746305841 1051041229 1492611682 2102082458 5224140887 10448281774 21642869389 36568986209 43285738778 73137972418 151500085723 303000171446 1060500600061 2121001200122