21011113032 has 64 divisors (see below), whose sum is σ = 64649585280. Its totient is φ = 5541391872.

The previous prime is 21011113027. The next prime is 21011113037. The reversal of 21011113032 is 23031111012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21011113027) and next prime (21011113037).

It is not an unprimeable number, because it can be changed into a prime (21011113037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4808053 + ... + 4812420.

It is an arithmetic number, because the mean of its divisors is an integer number (1010149770).

Almost surely, 2^21011113032 is an apocalyptic number.

It is an amenable number.

21011113032 is an abundant number, since it is smaller than the sum of its proper divisors (43638472248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21011113032 is a wasteful number, since it uses less digits than its factorization.

21011113032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9620502 (or 9620498 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21011113032 its reverse (23031111012), we get a palindrome (44042224044).

The spelling of 21011113032 in words is "twenty-one billion, eleven million, one hundred thirteen thousand, thirty-two".