21242331292 has 36 divisors (see below), whose sum is σ = 46004112336. Its totient is φ = 8403557760.

The previous prime is 21242331287. The next prime is 21242331301. The reversal of 21242331292 is 29213324212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2239809 + ... + 2249272.

Almost surely, 2^21242331292 is an apocalyptic number.

It is an amenable number.

21242331292 is an abundant number, since it is smaller than the sum of its proper divisors (24761781044).

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

21242331292 is a wasteful number, since it uses less digits than its factorization.

21242331292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489118 (or 4489103 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The spelling of 21242331292 in words is "twenty-one billion, two hundred forty-two million, three hundred thirty-one thousand, two hundred ninety-two".