21113032 has 32 divisors (see below), whose sum is σ = 41277600. Its totient is φ = 10115200.

The previous prime is 21113023. The next prime is 21113041. The reversal of 21113032 is 23031112.

It is an interprime number because it is at equal distance from previous prime (21113023) and next prime (21113041).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18807 + ... + 19897.

It is an arithmetic number, because the mean of its divisors is an integer number (1289925).

Almost surely, 2^21113032 is an apocalyptic number.

It is an amenable number.

21113032 is a deficient number, since it is larger than the sum of its proper divisors (20164568).

21113032 is a wasteful number, since it uses less digits than its factorization.

21113032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 21113032 is about 4594.8919464989. The cubic root of 21113032 is about 276.3865269747.

Adding to 21113032 its reverse (23031112), we get a palindrome (44144144).

It can be divided in two parts, 2 and 1113032, that multiplied together give a square (2226064 = 1492²).

The spelling of 21113032 in words is "twenty-one million, one hundred thirteen thousand, thirty-two".