121546623313 has 2 divisors, whose sum is σ = 121546623314. Its totient is φ = 121546623312.

The previous prime is 121546623287. The next prime is 121546623347. The reversal of 121546623313 is 313326645121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85994389504 + 35552233809 = 293248^2 + 188553^2 .

It is a cyclic number.

It is not a de Polignac number, because 121546623313 - 2³³ = 112956688721 is a prime.

It is not a weakly prime, because it can be changed into another prime (121546623413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60773311656 + 60773311657.

It is an arithmetic number, because the mean of its divisors is an integer number (60773311657).

Almost surely, 2^121546623313 is an apocalyptic number.

It is an amenable number.

121546623313 is a deficient number, since it is larger than the sum of its proper divisors (1).

121546623313 is an equidigital number, since it uses as much as digits as its factorization.

121546623313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The spelling of 121546623313 in words is "one hundred twenty-one billion, five hundred forty-six million, six hundred twenty-three thousand, three hundred thirteen".