101221200999955 has 16 divisors (see below), whose sum is σ = 128903429540160. Its totient is φ = 76040002824192.

The previous prime is 101221200999913. The next prime is 101221200999977. The reversal of 101221200999955 is 559999002122101.

It is a cyclic number.

It is not a de Polignac number, because 101221200999955 - 2⁷ = 101221200999827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101221200999896 and 101221200999905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356269814 + ... + 1356344443.

It is an arithmetic number, because the mean of its divisors is an integer number (8056464346260).

Almost surely, 2^{101221200999955} is an apocalyptic number.

101221200999955 is a deficient number, since it is larger than the sum of its proper divisors (27682228540205).

101221200999955 is a wasteful number, since it uses less digits than its factorization.

101221200999955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712614718.

The product of its (nonzero) digits is 1312200, while the sum is 55.

The spelling of 101221200999955 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred million, nine hundred ninety-nine thousand, nine hundred fifty-five".