101040221040 has 80 divisors (see below), whose sum is σ = 341699665536. Its totient is φ = 24494598400.

The previous prime is 101040221033. The next prime is 101040221147. The reversal of 101040221040 is 40122040101.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19133766 + ... + 19139045.

Almost surely, 2^101040221040 is an apocalyptic number.

101040221040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101040221040 is an abundant number, since it is smaller than the sum of its proper divisors (240659444496).

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

101040221040 is a wasteful number, since it uses less digits than its factorization.

101040221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38272838 (or 38272832 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 101040221040 its reverse (40122040101), we get a palindrome (141162261141).

The spelling of 101040221040 in words is "one hundred one billion, forty million, two hundred twenty-one thousand, forty".