120011165100 has 216 divisors, whose sum is σ = 403909335648. Its totient is φ = 29695948800.

The previous prime is 120011165069. The next prime is 120011165119. The reversal of 120011165100 is 1561110021.

It is a happy number.

120011165100 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 1 + 11 + 651 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1031062 + ... + 1141538.

It is an arithmetic number, because the mean of its divisors is an integer number (1869950628).

Almost surely, 2^120011165100 is an apocalyptic number.

120011165100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120011165100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201954667824).

120011165100 is an abundant number, since it is smaller than the sum of its proper divisors (283898170548).

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

120011165100 is a wasteful number, since it uses less digits than its factorization.

120011165100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110585 (or 110575 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

Adding to 120011165100 its reverse (1561110021), we get a palindrome (121572275121).

The spelling of 120011165100 in words is "one hundred twenty billion, eleven million, one hundred sixty-five thousand, one hundred".