121364058257 has 4 divisors (see below), whose sum is σ = 130699755060. Its totient is φ = 112028361456.

The previous prime is 121364058229. The next prime is 121364058281. The reversal of 121364058257 is 752850463121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40642156801 + 80721901456 = 201599^2 + 284116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121364058257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121364058217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4667848382 + ... + 4667848407.

It is an arithmetic number, because the mean of its divisors is an integer number (32674938765).

Almost surely, 2^121364058257 is an apocalyptic number.

It is an amenable number.

121364058257 is a deficient number, since it is larger than the sum of its proper divisors (9335696803).

121364058257 is an equidigital number, since it uses as much as digits as its factorization.

121364058257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9335696802.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 121364058257 in words is "one hundred twenty-one billion, three hundred sixty-four million, fifty-eight thousand, two hundred fifty-seven".