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122121101033 = 149381795781
BaseRepresentation
bin111000110111011111…
…1000001111011101001
3102200012211101201002222
41301232333001323221
54000101000213113
6132033543003425
711552163142301
oct1615677017351
9380184351088
10122121101033
11478781a5788
121b802139575
13b692782839
145ca6d26601
15329b2d9e08
hex1c6efc1ee9

122121101033 has 4 divisors (see below), whose sum is σ = 122202898308. Its totient is φ = 122039303760.

The previous prime is 122121101027. The next prime is 122121101083. The reversal of 122121101033 is 330101121221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 330101121221 = 1719417713013.

It can be written as a sum of positive squares in 2 ways, for example, as 95894270224 + 26226830809 = 309668^2 + 161947^2 .

It is a cyclic number.

It is not a de Polignac number, because 122121101033 - 222 = 122116906729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121101023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40896398 + ... + 40899383.

It is an arithmetic number, because the mean of its divisors is an integer number (30550724577).

Almost surely, 2122121101033 is an apocalyptic number.

It is an amenable number.

122121101033 is a deficient number, since it is larger than the sum of its proper divisors (81797275).

122121101033 is an equidigital number, since it uses as much as digits as its factorization.

122121101033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81797274.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 122121101033 its reverse (330101121221), we get a palindrome (452222222254).

The spelling of 122121101033 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred one thousand, thirty-three".

Divisors: 1 1493 81795781 122121101033