101025504221 has 12 divisors (see below), whose sum is σ = 108344087712. Its totient is φ = 94021356528.

The previous prime is 101025504169. The next prime is 101025504247. The reversal of 101025504221 is 122405520101.

It is a de Polignac number, because none of the positive numbers 2^k-101025504221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101025504421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1572755 + ... + 1635728.

It is an arithmetic number, because the mean of its divisors is an integer number (9028673976).

Almost surely, 2^101025504221 is an apocalyptic number.

It is an amenable number.

101025504221 is a deficient number, since it is larger than the sum of its proper divisors (7318583491).

101025504221 is an equidigital number, since it uses as much as digits as its factorization.

101025504221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208580 (or 3208543 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 101025504221 in words is "one hundred one billion, twenty-five million, five hundred four thousand, two hundred twenty-one".