21252277770262 has 64 divisors (see below), whose sum is σ = 42139381317120. Its totient is φ = 7782496934400.

The previous prime is 21252277770257. The next prime is 21252277770277. The reversal of 21252277770262 is 26207777225212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3557689 + ... + 7427092.

It is an arithmetic number, because the mean of its divisors is an integer number (658427833080).

Almost surely, 2^{21252277770262} is an apocalyptic number.

21252277770262 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21252277770262 is a deficient number, since it is larger than the sum of its proper divisors (20887103546858).

21252277770262 is a wasteful number, since it uses less digits than its factorization.

21252277770262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10985557.

The product of its (nonzero) digits is 4609920, while the sum is 52.

The spelling of 21252277770262 in words is "twenty-one trillion, two hundred fifty-two billion, two hundred seventy-seven million, seven hundred seventy thousand, two hundred sixty-two".