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2031202222101 = 3213171021217809
BaseRepresentation
bin11101100011101101000…
…101100100000000010101
321012011212222022222000200
4131203231011210000111
5231234400232101401
64153042120531113
7266515041005433
oct35435505440025
97164788288020
102031202222101
117134787790a8
122897b1620a99
13119706a1b1a0
147044c845d53
1537c82430686
hex1d8ed164015

2031202222101 has 24 divisors (see below), whose sum is σ = 3345509545560. Its totient is φ = 1176442914816.

The previous prime is 2031202222099. The next prime is 2031202222121. The reversal of 2031202222101 is 1012222021302.

It can be written as a sum of positive squares in 4 ways, for example, as 845248551876 + 1185953670225 = 919374^2 + 1089015^2 .

It is not a de Polignac number, because 2031202222101 - 21 = 2031202222099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031202222121) 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, 510606916 + ... + 510610893.

It is an arithmetic number, because the mean of its divisors is an integer number (139396231065).

Almost surely, 22031202222101 is an apocalyptic number.

It is an amenable number.

2031202222101 is a deficient number, since it is larger than the sum of its proper divisors (1314307323459).

2031202222101 is a wasteful number, since it uses less digits than its factorization.

2031202222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021217845 (or 1021217842 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2031202222101 its reverse (1012222021302), we get a palindrome (3043424243403).

The spelling of 2031202222101 in words is "two trillion, thirty-one billion, two hundred two million, two hundred twenty-two thousand, one hundred one".

Divisors: 1 3 9 13 17 39 51 117 153 221 663 1989 1021217809 3063653427 9190960281 13275831517 17360702753 39827494551 52082108259 119482483653 156246324777 225689135789 677067407367 2031202222101