121234122520011 has 48 divisors (see below), whose sum is σ = 176072326144000. Its totient is φ = 80382157634880.

The previous prime is 121234122519997. The next prime is 121234122520103. The reversal of 121234122520011 is 110025221432121.

121234122520011 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 3 + 4 + 122 + 520 + 0 + 11 = 666.

It is not a de Polignac number, because 121234122520011 - 2⁷ = 121234122519883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121234122528011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13335615576 + ... + 13335624666.

Almost surely, 2^{121234122520011} is an apocalyptic number.

121234122520011 is a deficient number, since it is larger than the sum of its proper divisors (54838203623989).

121234122520011 is a wasteful number, since it uses less digits than its factorization.

121234122520011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15664 (or 15661 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 121234122520011 its reverse (110025221432121), we get a palindrome (231259343952132).

The spelling of 121234122520011 in words is "one hundred twenty-one trillion, two hundred thirty-four billion, one hundred twenty-two million, five hundred twenty thousand, eleven".