121771044401 has 2 divisors, whose sum is σ = 121771044402. Its totient is φ = 121771044400.

The previous prime is 121771044389. The next prime is 121771044407. The reversal of 121771044401 is 104440177121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118016296225 + 3754748176 = 343535^2 + 61276^2 .

It is a cyclic number.

It is not a de Polignac number, because 121771044401 - 2²⁶ = 121703935537 is a prime.

It is not a weakly prime, because it can be changed into another prime (121771044407) 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, 60885522200 + 60885522201.

It is an arithmetic number, because the mean of its divisors is an integer number (60885522201).

Almost surely, 2^121771044401 is an apocalyptic number.

It is an amenable number.

121771044401 is a deficient number, since it is larger than the sum of its proper divisors (1).

121771044401 is an equidigital number, since it uses as much as digits as its factorization.

121771044401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 32.

The spelling of 121771044401 in words is "one hundred twenty-one billion, seven hundred seventy-one million, forty-four thousand, four hundred one".