21322010012 has 12 divisors (see below), whose sum is σ = 37339749216. Its totient is φ = 10653510240.

The previous prime is 21322009991. The next prime is 21322010023. The reversal of 21322010012 is 21001022312.

It is a happy number.

It is a super-2 number, since 2×21322010012² (a number of 21 digits) contains 22 as substring.

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, 1867289 + ... + 1878672.

It is an arithmetic number, because the mean of its divisors is an integer number (3111645768).

Almost surely, 2^21322010012 is an apocalyptic number.

It is an amenable number.

21322010012 is a deficient number, since it is larger than the sum of its proper divisors (16017739204).

21322010012 is a wasteful number, since it uses less digits than its factorization.

21322010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3747388 (or 3747386 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21322010012 its reverse (21001022312), we get a palindrome (42323032324).

The spelling of 21322010012 in words is "twenty-one billion, three hundred twenty-two million, ten thousand, twelve".