21413321012 has 12 divisors (see below), whose sum is σ = 37514452416. Its totient is φ = 10694906040.

The previous prime is 21413321009. The next prime is 21413321053. The reversal of 21413321012 is 21012331412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934518 + ... + 2941805.

It is an arithmetic number, because the mean of its divisors is an integer number (3126204368).

Almost surely, 2^21413321012 is an apocalyptic number.

It is an amenable number.

21413321012 is a deficient number, since it is larger than the sum of its proper divisors (16101131404).

21413321012 is a wasteful number, since it uses less digits than its factorization.

21413321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877238 (or 5877236 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21413321012 its reverse (21012331412), we get a palindrome (42425652424).

The spelling of 21413321012 in words is "twenty-one billion, four hundred thirteen million, three hundred twenty-one thousand, twelve".