121010021102121 has 64 divisors (see below), whose sum is σ = 177414471936000. Its totient is φ = 73069941127680.

The previous prime is 121010021102059. The next prime is 121010021102147. The reversal of 121010021102121 is 121201120010121.

It is a happy number.

It is not a de Polignac number, because 121010021102121 - 2⁷ = 121010021101993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121010021102121.

It is not an unprimeable number, because it can be changed into a prime (121010021102171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3733593406 + ... + 3733625816.

It is an arithmetic number, because the mean of its divisors is an integer number (2772101124000).

Almost surely, 2^{121010021102121} is an apocalyptic number.

It is an amenable number.

121010021102121 is a deficient number, since it is larger than the sum of its proper divisors (56404450833879).

121010021102121 is a wasteful number, since it uses less digits than its factorization.

121010021102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54494.

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

Adding to 121010021102121 its reverse (121201120010121), we get a palindrome (242211141112242).

The spelling of 121010021102121 in words is "one hundred twenty-one trillion, ten billion, twenty-one million, one hundred two thousand, one hundred twenty-one".