121430120211 has 6 divisors (see below), whose sum is σ = 175399062540. Its totient is φ = 80953413468.

The previous prime is 121430120177. The next prime is 121430120239. The reversal of 121430120211 is 112021034121.

121430120211 is a `hidden beast` number, since 1 + 2 + 1 + 430 + 1 + 20 + 211 = 666.

It is not a de Polignac number, because 121430120211 - 2²⁵ = 121396565779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121430120611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6746117781 + ... + 6746117798.

It is an arithmetic number, because the mean of its divisors is an integer number (29233177090).

Almost surely, 2^121430120211 is an apocalyptic number.

121430120211 is a deficient number, since it is larger than the sum of its proper divisors (53968942329).

121430120211 is a wasteful number, since it uses less digits than its factorization.

121430120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492235585 (or 13492235582 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121430120211 its reverse (112021034121), we get a palindrome (233451154332).

The spelling of 121430120211 in words is "one hundred twenty-one billion, four hundred thirty million, one hundred twenty thousand, two hundred eleven".