20121010120979 has 2 divisors, whose sum is σ = 20121010120980. Its totient is φ = 20121010120978.

The previous prime is 20121010120963. The next prime is 20121010121011. The reversal of 20121010120979 is 97902101012102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121010120979 - 2⁴ = 20121010120963 is a prime.

It is not a weakly prime, because it can be changed into another prime (20121010120919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060505060489 + 10060505060490.

It is an arithmetic number, because the mean of its divisors is an integer number (10060505060490).

Almost surely, 2^{20121010120979} is an apocalyptic number.

20121010120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121010120979 is an equidigital number, since it uses as much as digits as its factorization.

20121010120979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 20121010120979 in words is "twenty trillion, one hundred twenty-one billion, ten million, one hundred twenty thousand, nine hundred seventy-nine".