21221000092 has 6 divisors (see below), whose sum is σ = 37136750168. Its totient is φ = 10610500044.

The previous prime is 21221000083. The next prime is 21221000131. The reversal of 21221000092 is 29000012212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2652625008 + ... + 2652625015.

Almost surely, 2^21221000092 is an apocalyptic number.

It is an amenable number.

21221000092 is a deficient number, since it is larger than the sum of its proper divisors (15915750076).

21221000092 is a wasteful number, since it uses less digits than its factorization.

21221000092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305250027 (or 5305250025 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 21221000092 in words is "twenty-one billion, two hundred twenty-one million, ninety-two", and thus it is an aban number.