21030013032 has 64 divisors (see below), whose sum is σ = 61070793600. Its totient is φ = 5910071040.

The previous prime is 21030013031. The next prime is 21030013049. The reversal of 21030013032 is 23031003012.

It is a super-2 number, since 2×21030013032² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21030013031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015807 + ... + 1036302.

It is an arithmetic number, because the mean of its divisors is an integer number (954231150).

Almost surely, 2^21030013032 is an apocalyptic number.

It is an amenable number.

21030013032 is an abundant number, since it is smaller than the sum of its proper divisors (40040780568).

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

21030013032 is a wasteful number, since it uses less digits than its factorization.

21030013032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052186 (or 2052182 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21030013032 its reverse (23031003012), we get a palindrome (44061016044).

The spelling of 21030013032 in words is "twenty-one billion, thirty million, thirteen thousand, thirty-two".