121502552331 has 4 divisors (see below), whose sum is σ = 162003403112. Its totient is φ = 81001701552.

The previous prime is 121502552317. The next prime is 121502552357. The reversal of 121502552331 is 133255205121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121502552331 - 2¹⁷ = 121502421259 is a prime.

It is a super-2 number, since 2×121502552331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121502553331) by changing a digit.

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, 20250425386 + ... + 20250425391.

It is an arithmetic number, because the mean of its divisors is an integer number (40500850778).

Almost surely, 2^121502552331 is an apocalyptic number.

121502552331 is a deficient number, since it is larger than the sum of its proper divisors (40500850781).

121502552331 is an equidigital number, since it uses as much as digits as its factorization.

121502552331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40500850780.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 121502552331 its reverse (133255205121), we get a palindrome (254757757452).

The spelling of 121502552331 in words is "one hundred twenty-one billion, five hundred two million, five hundred fifty-two thousand, three hundred thirty-one".