100210425221 has 4 divisors (see below), whose sum is σ = 100261843500. Its totient is φ = 100159006944.

The previous prime is 100210425053. The next prime is 100210425241. The reversal of 100210425221 is 122524012001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122524012001 = 49411 ⋅2479691.

It can be written as a sum of positive squares in 2 ways, for example, as 91437292996 + 8773132225 = 302386^2 + 93665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100210425221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100210425193 and 100210425202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100210425241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25706216 + ... + 25710113.

It is an arithmetic number, because the mean of its divisors is an integer number (25065460875).

Almost surely, 2^100210425221 is an apocalyptic number.

It is an amenable number.

100210425221 is a deficient number, since it is larger than the sum of its proper divisors (51418279).

100210425221 is an equidigital number, since it uses as much as digits as its factorization.

100210425221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51418278.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 100210425221 its reverse (122524012001), we get a palindrome (222734437222).

The spelling of 100210425221 in words is "one hundred billion, two hundred ten million, four hundred twenty-five thousand, two hundred twenty-one".