121557107055002 has 16 divisors (see below), whose sum is σ = 186257078374752. Its totient is φ = 59485101585840.

The previous prime is 121557107054953. The next prime is 121557107055101. The reversal of 121557107055002 is 200550701755121.

121557107055002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121557107055002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3421812749 + ... + 3421848272.

It is an arithmetic number, because the mean of its divisors is an integer number (11641067398422).

Almost surely, 2^{121557107055002} is an apocalyptic number.

121557107055002 is a deficient number, since it is larger than the sum of its proper divisors (64699971319750).

121557107055002 is a wasteful number, since it uses less digits than its factorization.

121557107055002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843661213.

The product of its (nonzero) digits is 122500, while the sum is 41.

The spelling of 121557107055002 in words is "one hundred twenty-one trillion, five hundred fifty-seven billion, one hundred seven million, fifty-five thousand, two".