109985211042 has 64 divisors (see below), whose sum is σ = 264671155200. Its totient is φ = 29765361600.

The previous prime is 109985210969. The next prime is 109985211053. The reversal of 109985211042 is 240112589901.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 109985210985 and 109985211003.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9331509 + ... + 9343287.

It is an arithmetic number, because the mean of its divisors is an integer number (4135486800).

Almost surely, 2^109985211042 is an apocalyptic number.

109985211042 is an abundant number, since it is smaller than the sum of its proper divisors (154685944158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109985211042 is a wasteful number, since it uses less digits than its factorization.

109985211042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23511.

The product of its (nonzero) digits is 51840, while the sum is 42.

The spelling of 109985211042 in words is "one hundred nine billion, nine hundred eighty-five million, two hundred eleven thousand, forty-two".