21321310132 has 12 divisors (see below), whose sum is σ = 38934566496. Its totient is φ = 10197148280.

The previous prime is 21321310117. The next prime is 21321310147. The reversal of 21321310132 is 23101312312.

It is an interprime number because it is at equal distance from previous prime (21321310117) and next prime (21321310147).

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, 115876594 + ... + 115876777.

It is an arithmetic number, because the mean of its divisors is an integer number (3244547208).

Almost surely, 2^21321310132 is an apocalyptic number.

It is an amenable number.

21321310132 is a deficient number, since it is larger than the sum of its proper divisors (17613256364).

21321310132 is a wasteful number, since it uses less digits than its factorization.

21321310132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231753398 (or 231753396 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21321310132 its reverse (23101312312), we get a palindrome (44422622444).

The spelling of 21321310132 in words is "twenty-one billion, three hundred twenty-one million, three hundred ten thousand, one hundred thirty-two".