21302111012 has 48 divisors (see below), whose sum is σ = 46189516800. Its totient is φ = 8370628992.

The previous prime is 21302110891. The next prime is 21302111023. The reversal of 21302111012 is 21011120312.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142148 + ... + 250619.

It is an arithmetic number, because the mean of its divisors is an integer number (962281600).

Almost surely, 2^21302111012 is an apocalyptic number.

It is an amenable number.

21302111012 is an abundant number, since it is smaller than the sum of its proper divisors (24887405788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21302111012 is a wasteful number, since it uses less digits than its factorization.

21302111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392940 (or 392938 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21302111012 its reverse (21011120312), we get a palindrome (42313231324).

The spelling of 21302111012 in words is "twenty-one billion, three hundred two million, one hundred eleven thousand, twelve".