100221322231 has 4 divisors (see below), whose sum is σ = 100224307264. Its totient is φ = 100218337200.

The previous prime is 100221322217. The next prime is 100221322241. The reversal of 100221322231 is 132223122001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132223122001 = 199 ⋅664437799.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221322231 is a prime.

It is a super-2 number, since 2×100221322231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100221322199 and 100221322208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221322241) 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, 1441575 + ... + 1509496.

It is an arithmetic number, because the mean of its divisors is an integer number (25056076816).

Almost surely, 2^100221322231 is an apocalyptic number.

100221322231 is a deficient number, since it is larger than the sum of its proper divisors (2985033).

100221322231 is an equidigital number, since it uses as much as digits as its factorization.

100221322231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985032.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 100221322231 its reverse (132223122001), we get a palindrome (232444444232).

The spelling of 100221322231 in words is "one hundred billion, two hundred twenty-one million, three hundred twenty-two thousand, two hundred thirty-one".