101561086220 has 36 divisors (see below), whose sum is σ = 234429851712. Its totient is φ = 36931303200.

The previous prime is 101561086217. The next prime is 101561086247. The reversal of 101561086220 is 22680165101.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20981276 + ... + 20986115.

Almost surely, 2^101561086220 is an apocalyptic number.

101561086220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101561086220 is an abundant number, since it is smaller than the sum of its proper divisors (132868765492).

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

101561086220 is a wasteful number, since it uses less digits than its factorization.

101561086220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41967422 (or 41967409 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 101561086220 in words is "one hundred one billion, five hundred sixty-one million, eighty-six thousand, two hundred twenty".