121110201988 has 24 divisors (see below), whose sum is σ = 221194411200. Its totient is φ = 57912671520.

The previous prime is 121110201977. The next prime is 121110201991. The reversal of 121110201988 is 889102011121.

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, 465438 + ... + 677386.

It is an arithmetic number, because the mean of its divisors is an integer number (9216433800).

Almost surely, 2^121110201988 is an apocalyptic number.

It is an amenable number.

121110201988 is a deficient number, since it is larger than the sum of its proper divisors (100084209212).

121110201988 is a wasteful number, since it uses less digits than its factorization.

121110201988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218187 (or 218185 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 34.

The spelling of 121110201988 in words is "one hundred twenty-one billion, one hundred ten million, two hundred one thousand, nine hundred eighty-eight".