21014012 has 24 divisors (see below), whose sum is σ = 37935072. Its totient is φ = 10180800.

The previous prime is 21013997. The next prime is 21014041. The reversal of 21014012 is 21041012.

It is a super-2 number, since 2×21014012² = 883177400672288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21013984 and 21014002.

It is a congruent number.

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, 16718 + ... + 17930.

It is an arithmetic number, because the mean of its divisors is an integer number (1580628).

Almost surely, 2^21014012 is an apocalyptic number.

It is an amenable number.

21014012 is a deficient number, since it is larger than the sum of its proper divisors (16921060).

21014012 is a wasteful number, since it uses less digits than its factorization.

21014012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 21014012 is about 4584.1042745557. The cubic root of 21014012 is about 275.9537659726.

Adding to 21014012 its reverse (21041012), we get a palindrome (42055024).

Subtracting 21014012 from its reverse (21041012), we obtain a cube (27000 = 30³).

The spelling of 21014012 in words is "twenty-one million, fourteen thousand, twelve".