21102330012 has 48 divisors (see below), whose sum is σ = 51857111040. Its totient is φ = 6660444672.

The previous prime is 21102330001. The next prime is 21102330017. The reversal of 21102330012 is 21003320112.

It is a junction number, because it is equal to n+sod(n) for n = 21102329973 and 21102330000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102330017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436933 + ... + 482819.

It is an arithmetic number, because the mean of its divisors is an integer number (1080356480).

Almost surely, 2^21102330012 is an apocalyptic number.

It is an amenable number.

21102330012 is an abundant number, since it is smaller than the sum of its proper divisors (30754781028).

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

21102330012 is a wasteful number, since it uses less digits than its factorization.

21102330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47930 (or 47928 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21102330012 its reverse (21003320112), we get a palindrome (42105650124).

The spelling of 21102330012 in words is "twenty-one billion, one hundred two million, three hundred thirty thousand, twelve".