21124102202 has 32 divisors (see below), whose sum is σ = 36514800000. Its totient is φ = 8977871808.

The previous prime is 21124102171. The next prime is 21124102217. The reversal of 21124102202 is 20220142112.

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, 1333424 + ... + 1349172.

It is an arithmetic number, because the mean of its divisors is an integer number (1141087500).

Almost surely, 2^21124102202 is an apocalyptic number.

21124102202 is a deficient number, since it is larger than the sum of its proper divisors (15390697798).

21124102202 is a wasteful number, since it uses less digits than its factorization.

21124102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16550.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21124102202 its reverse (20220142112), we get a palindrome (41344244314).

The spelling of 21124102202 in words is "twenty-one billion, one hundred twenty-four million, one hundred two thousand, two hundred two".