12663622980921 has 32 divisors (see below), whose sum is σ = 18434870378496. Its totient is φ = 7668651600000.

The previous prime is 12663622980919. The next prime is 12663622980923. The reversal of 12663622980921 is 12908922636621.

It is an interprime number because it is at equal distance from previous prime (12663622980919) and next prime (12663622980923).

It is not a de Polignac number, because 12663622980921 - 2¹ = 12663622980919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12663622980923) 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, 449034621 + ... + 449062821.

It is an arithmetic number, because the mean of its divisors is an integer number (576089699328).

Almost surely, 2^{12663622980921} is an apocalyptic number.

12663622980921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12663622980921 is a deficient number, since it is larger than the sum of its proper divisors (5771247397575).

12663622980921 is a wasteful number, since it uses less digits than its factorization.

12663622980921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38853.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 12663622980921 in words is "twelve trillion, six hundred sixty-three billion, six hundred twenty-two million, nine hundred eighty thousand, nine hundred twenty-one".