21292620212 has 24 divisors (see below), whose sum is σ = 38073325920. Its totient is φ = 10416238560.

The previous prime is 21292620187. The next prime is 21292620317. The reversal of 21292620212 is 21202629212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164003 + ... + 263594.

It is an arithmetic number, because the mean of its divisors is an integer number (1586388580).

Almost surely, 2^21292620212 is an apocalyptic number.

It is an amenable number.

21292620212 is a deficient number, since it is larger than the sum of its proper divisors (16780705708).

21292620212 is a wasteful number, since it uses less digits than its factorization.

21292620212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427871 (or 427869 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 21292620212 in words is "twenty-one billion, two hundred ninety-two million, six hundred twenty thousand, two hundred twelve".