102101100440 has 32 divisors (see below), whose sum is σ = 239715629280. Its totient is φ = 39064768512.

The previous prime is 102101100427. The next prime is 102101100467. The reversal of 102101100440 is 44001101201.

It is a super-2 number, since 2×102101100440² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 55488809 + ... + 55490648.

It is an arithmetic number, because the mean of its divisors is an integer number (7491113415).

Almost surely, 2^102101100440 is an apocalyptic number.

102101100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102101100440 is an abundant number, since it is smaller than the sum of its proper divisors (137614528840).

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

102101100440 is a wasteful number, since it uses less digits than its factorization.

102101100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110979491 (or 110979487 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102101100440 its reverse (44001101201), we get a palindrome (146102201641).

The spelling of 102101100440 in words is "one hundred two billion, one hundred one million, one hundred thousand, four hundred forty".