121020111100195 has 16 divisors (see below), whose sum is σ = 148572813995712. Its totient is φ = 94607769733120.

The previous prime is 121020111100177. The next prime is 121020111100201. The reversal of 121020111100195 is 591001111020121.

It is a de Polignac number, because none of the positive numbers 2^k-121020111100195 is a prime.

It is a super-3 number, since 3×121020111100195³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

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, 1508374582 + ... + 1508454811.

It is an arithmetic number, because the mean of its divisors is an integer number (9285800874732).

Almost surely, 2^{121020111100195} is an apocalyptic number.

121020111100195 is a deficient number, since it is larger than the sum of its proper divisors (27552702895517).

121020111100195 is a wasteful number, since it uses less digits than its factorization.

121020111100195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016829582.

The product of its (nonzero) digits is 180, while the sum is 25.

The spelling of 121020111100195 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, one hundred thousand, one hundred ninety-five".