201210120120121 has 16 divisors (see below), whose sum is σ = 234293842427904. Its totient is φ = 169211270913984.

The previous prime is 201210120120073. The next prime is 201210120120157. The reversal of 201210120120121 is 121021021012102.

It is a cyclic number.

It is not a de Polignac number, because 201210120120121 - 2⁷ = 201210120119993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201210120120095 and 201210120120104.

It is not an unprimeable number, because it can be changed into a prime (201210120121121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211701855 + ... + 212650171.

It is an arithmetic number, because the mean of its divisors is an integer number (14643365151744).

Almost surely, 2^{201210120120121} is an apocalyptic number.

It is an amenable number.

201210120120121 is a deficient number, since it is larger than the sum of its proper divisors (33083722307783).

201210120120121 is an equidigital number, since it uses as much as digits as its factorization.

201210120120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520280.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201210120120121 its reverse (121021021012102), we get a palindrome (322231141132223).

The spelling of 201210120120121 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-one".