21022156667368 has 16 divisors (see below), whose sum is σ = 39416669124480. Its totient is φ = 10511044900848.

The previous prime is 21022156667341. The next prime is 21022156667399. The reversal of 21022156667368 is 86376665122012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397880 + ... + 6633127.

It is an arithmetic number, because the mean of its divisors is an integer number (2463541820280).

Almost surely, 2^{21022156667368} is an apocalyptic number.

It is an amenable number.

21022156667368 is a deficient number, since it is larger than the sum of its proper divisors (18394512457112).

21022156667368 is a wasteful number, since it uses less digits than its factorization.

21022156667368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8358216 (or 8358212 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 21022156667368 in words is "twenty-one trillion, twenty-two billion, one hundred fifty-six million, six hundred sixty-seven thousand, three hundred sixty-eight".