121553137167 has 32 divisors (see below), whose sum is σ = 206361575424. Its totient is φ = 61800981600.

The previous prime is 121553137103. The next prime is 121553137177. The reversal of 121553137167 is 761731355121.

It is not a de Polignac number, because 121553137167 - 2⁶ = 121553137103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121553137177) 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, 5587059 + ... + 5608772.

It is an arithmetic number, because the mean of its divisors is an integer number (6448799232).

Almost surely, 2^121553137167 is an apocalyptic number.

121553137167 is a deficient number, since it is larger than the sum of its proper divisors (84808438257).

121553137167 is a wasteful number, since it uses less digits than its factorization.

121553137167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11195899.

The product of its digits is 132300, while the sum is 42.

The spelling of 121553137167 in words is "one hundred twenty-one billion, five hundred fifty-three million, one hundred thirty-seven thousand, one hundred sixty-seven".