21054311032 has 16 divisors (see below), whose sum is σ = 40032846000. Its totient is φ = 10378885440.

The previous prime is 21054311029. The next prime is 21054311039. The reversal of 21054311032 is 23011345012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21054310994 and 21054311012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054311039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533157 + ... + 18534292.

It is an arithmetic number, because the mean of its divisors is an integer number (2502052875).

Almost surely, 2^21054311032 is an apocalyptic number.

It is an amenable number.

21054311032 is a deficient number, since it is larger than the sum of its proper divisors (18978534968).

21054311032 is a wasteful number, since it uses less digits than its factorization.

21054311032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37067526 (or 37067522 counting only the distinct ones).

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

Adding to 21054311032 its reverse (23011345012), we get a palindrome (44065656044).

The spelling of 21054311032 in words is "twenty-one billion, fifty-four million, three hundred eleven thousand, thirty-two".