101981110 has 64 divisors (see below), whose sum is σ = 236805120. Its totient is φ = 30683520.

The previous prime is 101981107. The next prime is 101981137. The reversal of 101981110 is 11189101.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20047 + ... + 24613.

It is an arithmetic number, because the mean of its divisors is an integer number (3700080).

Almost surely, 2^101981110 is an apocalyptic number.

101981110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101981110 is an abundant number, since it is smaller than the sum of its proper divisors (134824010).

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

101981110 is a wasteful number, since it uses less digits than its factorization.

101981110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621.

The product of its (nonzero) digits is 72, while the sum is 22.

The square root of 101981110 is about 10098.5697007051. The cubic root of 101981110 is about 467.2040278229.

The spelling of 101981110 in words is "one hundred one million, nine hundred eighty-one thousand, one hundred ten".