121027464661 has 2 divisors, whose sum is σ = 121027464662. Its totient is φ = 121027464660.

The previous prime is 121027464559. The next prime is 121027464667. The reversal of 121027464661 is 166464720121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68975042161 + 52052422500 = 262631^2 + 228150^2 .

It is a cyclic number.

It is not a de Polignac number, because 121027464661 - 2⁷ = 121027464533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121027464667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60513732330 + 60513732331.

It is an arithmetic number, because the mean of its divisors is an integer number (60513732331).

Almost surely, 2^121027464661 is an apocalyptic number.

It is an amenable number.

121027464661 is a deficient number, since it is larger than the sum of its proper divisors (1).

121027464661 is an equidigital number, since it uses as much as digits as its factorization.

121027464661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 121027464661 in words is "one hundred twenty-one billion, twenty-seven million, four hundred sixty-four thousand, six hundred sixty-one".