121552002158 has 8 divisors (see below), whose sum is σ = 193053179952. Its totient is φ = 57200942176.

The previous prime is 121552002113. The next prime is 121552002191. The reversal of 121552002158 is 851200255121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1787529410 + ... + 1787529477.

It is an arithmetic number, because the mean of its divisors is an integer number (24131647494).

Almost surely, 2^121552002158 is an apocalyptic number.

121552002158 is a deficient number, since it is larger than the sum of its proper divisors (71501177794).

121552002158 is a wasteful number, since it uses less digits than its factorization.

121552002158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575058906.

The product of its (nonzero) digits is 8000, while the sum is 32.

Adding to 121552002158 its reverse (851200255121), we get a palindrome (972752257279).

The spelling of 121552002158 in words is "one hundred twenty-one billion, five hundred fifty-two million, two thousand, one hundred fifty-eight".