121201100100961 has 2 divisors, whose sum is σ = 121201100100962. Its totient is φ = 121201100100960.

The previous prime is 121201100100929. The next prime is 121201100101007. The reversal of 121201100100961 is 169001001102121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81529053070336 + 39672047030625 = 9029344^2 + 6298575^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201100100961 - 2⁵ = 121201100100929 is a prime.

It is not a weakly prime, because it can be changed into another prime (121201100130961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600550050480 + 60600550050481.

It is an arithmetic number, because the mean of its divisors is an integer number (60600550050481).

Almost surely, 2^{121201100100961} is an apocalyptic number.

It is an amenable number.

121201100100961 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201100100961 is an equidigital number, since it uses as much as digits as its factorization.

121201100100961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 121201100100961 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred million, one hundred thousand, nine hundred sixty-one".