121354453057 has 2 divisors, whose sum is σ = 121354453058. Its totient is φ = 121354453056.

The previous prime is 121354453049. The next prime is 121354453081. The reversal of 121354453057 is 750354453121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74371289521 + 46983163536 = 272711^2 + 216756^2 .

It is a cyclic number.

It is not a de Polignac number, because 121354453057 - 2³ = 121354453049 is a prime.

It is not a weakly prime, because it can be changed into another prime (121354453357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60677226528 + 60677226529.

It is an arithmetic number, because the mean of its divisors is an integer number (60677226529).

Almost surely, 2^121354453057 is an apocalyptic number.

It is an amenable number.

121354453057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121354453057 is an equidigital number, since it uses as much as digits as its factorization.

121354453057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 121354453057 in words is "one hundred twenty-one billion, three hundred fifty-four million, four hundred fifty-three thousand, fifty-seven".