121631605622011 has 2 divisors, whose sum is σ = 121631605622012. Its totient is φ = 121631605622010.

The previous prime is 121631605621993. The next prime is 121631605622123. The reversal of 121631605622011 is 110226506136121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121631605622011 - 2⁵ = 121631605621979 is a prime.

It is not a weakly prime, because it can be changed into another prime (121631609622011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60815802811005 + 60815802811006.

It is an arithmetic number, because the mean of its divisors is an integer number (60815802811006).

Almost surely, 2^{121631605622011} is an apocalyptic number.

121631605622011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121631605622011 is an equidigital number, since it uses as much as digits as its factorization.

121631605622011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 121631605622011 in words is "one hundred twenty-one trillion, six hundred thirty-one billion, six hundred five million, six hundred twenty-two thousand, eleven".