121121252121121 has 32 divisors (see below), whose sum is σ = 139989465243648. Its totient is φ = 102650041428480.

The previous prime is 121121252121119. The next prime is 121121252121143.

121121252121121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 121121252121121 - 2¹ = 121121252121119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121252101121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1397085051 + ... + 1397171743.

It is an arithmetic number, because the mean of its divisors is an integer number (4374670788864).

Almost surely, 2^{121121252121121} is an apocalyptic number.

It is an amenable number.

121121252121121 is a deficient number, since it is larger than the sum of its proper divisors (18868213122527).

121121252121121 is a wasteful number, since it uses less digits than its factorization.

121121252121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92161.

The product of its digits is 320, while the sum is 25.

The spelling of 121121252121121 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred fifty-two million, one hundred twenty-one thousand, one hundred twenty-one".