21194252350 has 12 divisors (see below), whose sum is σ = 39421309464. Its totient is φ = 8477700920.

The previous prime is 21194252341. The next prime is 21194252369. The reversal of 21194252350 is 5325249112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211942474 + ... + 211942573.

It is an arithmetic number, because the mean of its divisors is an integer number (3285109122).

Almost surely, 2^21194252350 is an apocalyptic number.

21194252350 is a deficient number, since it is larger than the sum of its proper divisors (18227057114).

21194252350 is a wasteful number, since it uses less digits than its factorization.

21194252350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423885059 (or 423885054 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 21194252350 in words is "twenty-one billion, one hundred ninety-four million, two hundred fifty-two thousand, three hundred fifty".