21153232022331 has 32 divisors (see below), whose sum is σ = 29665379450880. Its totient is φ = 13388879836800.

The previous prime is 21153232022303. The next prime is 21153232022339. The reversal of 21153232022331 is 13322023235112.

It is not a de Polignac number, because 21153232022331 - 2³⁰ = 21152158280507 is a prime.

It is a super-2 number, since 2×21153232022331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21153232022339) 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, 80304861 + ... + 80567841.

It is an arithmetic number, because the mean of its divisors is an integer number (927043107840).

Almost surely, 2^{21153232022331} is an apocalyptic number.

21153232022331 is a deficient number, since it is larger than the sum of its proper divisors (8512147428549).

21153232022331 is a wasteful number, since it uses less digits than its factorization.

21153232022331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279387.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 21153232022331 its reverse (13322023235112), we get a palindrome (34475255257443).

The spelling of 21153232022331 in words is "twenty-one trillion, one hundred fifty-three billion, two hundred thirty-two million, twenty-two thousand, three hundred thirty-one".