20152332121 has 16 divisors (see below), whose sum is σ = 21283891200. Its totient is φ = 19027990800.

The previous prime is 20152332107. The next prime is 20152332139. The reversal of 20152332121 is 12123325102.

It is not a de Polignac number, because 20152332121 - 2⁹ = 20152331609 is a prime.

It is a super-2 number, since 2×20152332121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20152332092 and 20152332101.

It is not an unprimeable number, because it can be changed into a prime (20152332191) 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 15 ways as a sum of consecutive naturals, for example, 9882420 + ... + 9884458.

It is an arithmetic number, because the mean of its divisors is an integer number (1330243200).

Almost surely, 2^20152332121 is an apocalyptic number.

It is an amenable number.

20152332121 is a deficient number, since it is larger than the sum of its proper divisors (1131559079).

20152332121 is a wasteful number, since it uses less digits than its factorization.

20152332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20152332121 its reverse (12123325102), we get a palindrome (32275657223).

The spelling of 20152332121 in words is "twenty billion, one hundred fifty-two million, three hundred thirty-two thousand, one hundred twenty-one".