121432020111 has 12 divisors (see below), whose sum is σ = 176954036688. Its totient is φ = 80238266304.

The previous prime is 121432020103. The next prime is 121432020133. The reversal of 121432020111 is 111020234121.

121432020111 is a `hidden beast` number, since 1 + 21 + 432 + 0 + 201 + 11 = 666.

It is not a de Polignac number, because 121432020111 - 2³ = 121432020103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121432020191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59700075 + ... + 59702108.

It is an arithmetic number, because the mean of its divisors is an integer number (14746169724).

Almost surely, 2^121432020111 is an apocalyptic number.

121432020111 is a deficient number, since it is larger than the sum of its proper divisors (55522016577).

121432020111 is a wasteful number, since it uses less digits than its factorization.

121432020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119402302 (or 119402299 counting only the distinct ones).

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

Adding to 121432020111 its reverse (111020234121), we get a palindrome (232452254232).

The spelling of 121432020111 in words is "one hundred twenty-one billion, four hundred thirty-two million, twenty thousand, one hundred eleven".