12210121010121 has 16 divisors (see below), whose sum is σ = 17203032360960. Its totient is φ = 7687605079440.

The previous prime is 12210121010093. The next prime is 12210121010159. The reversal of 12210121010121 is 12101012101221.

It is a happy number.

It is not a de Polignac number, because 12210121010121 - 2¹⁸ = 12210120747977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12210121010121.

It is not an unprimeable number, because it can be changed into a prime (12210121010221) 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, 1119983635 + ... + 1119994536.

It is an arithmetic number, because the mean of its divisors is an integer number (1075189522560).

Almost surely, 2^{12210121010121} is an apocalyptic number.

It is an amenable number.

12210121010121 is a deficient number, since it is larger than the sum of its proper divisors (4992911350839).

12210121010121 is a wasteful number, since it uses less digits than its factorization.

12210121010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239978276.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12210121010121 its reverse (12101012101221), we get a palindrome (24311133111342).

The spelling of 12210121010121 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, ten thousand, one hundred twenty-one".