20621122301667 has 32 divisors (see below), whose sum is σ = 28320381665280. Its totient is φ = 13341043124640.

The previous prime is 20621122301651. The next prime is 20621122301707. The reversal of 20621122301667 is 76610322112602.

It is not a de Polignac number, because 20621122301667 - 2⁴ = 20621122301651 is a prime.

It is a super-2 number, since 2×20621122301667² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20621122301167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17687728 + ... + 18817490.

It is an arithmetic number, because the mean of its divisors is an integer number (885011927040).

Almost surely, 2^{20621122301667} is an apocalyptic number.

20621122301667 is a deficient number, since it is larger than the sum of its proper divisors (7699259363613).

20621122301667 is a wasteful number, since it uses less digits than its factorization.

20621122301667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131183.

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 20621122301667 in words is "twenty trillion, six hundred twenty-one billion, one hundred twenty-two million, three hundred one thousand, six hundred sixty-seven".