101901110820 has 24 divisors (see below), whose sum is σ = 285323110464. Its totient is φ = 27173629536.

The previous prime is 101901110809. The next prime is 101901110837. The reversal of 101901110820 is 28011109101.

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, 849175864 + ... + 849175983.

It is an arithmetic number, because the mean of its divisors is an integer number (11888462936).

Almost surely, 2^101901110820 is an apocalyptic number.

101901110820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101901110820 is an abundant number, since it is smaller than the sum of its proper divisors (183421999644).

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

101901110820 is a wasteful number, since it uses less digits than its factorization.

101901110820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698351859 (or 1698351857 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 24.

Adding to 101901110820 its reverse (28011109101), we get a palindrome (129912219921).

The spelling of 101901110820 in words is "one hundred one billion, nine hundred one million, one hundred ten thousand, eight hundred twenty".