121057515724 has 12 divisors (see below), whose sum is σ = 223000687000. Its totient is φ = 57343033728.

The previous prime is 121057515679. The next prime is 121057515739. The reversal of 121057515724 is 427515750121.

It is a super-2 number, since 2×121057515724² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 796430949 + ... + 796431100.

Almost surely, 2^121057515724 is an apocalyptic number.

It is an amenable number.

121057515724 is a deficient number, since it is larger than the sum of its proper divisors (101943171276).

121057515724 is a wasteful number, since it uses less digits than its factorization.

121057515724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592862072 (or 1592862070 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 40.

The spelling of 121057515724 in words is "one hundred twenty-one billion, fifty-seven million, five hundred fifteen thousand, seven hundred twenty-four".