100221212023 has 36 divisors (see below), whose sum is σ = 108702723360. Its totient is φ = 92377853568.

The previous prime is 100221212017. The next prime is 100221212041. The reversal of 100221212023 is 320212122001.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-100221212023 is a prime.

It is a super-4 number, since 4×100221212023⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100221211988 and 100221212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221212423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77270911 + ... + 77272207.

Almost surely, 2^100221212023 is an apocalyptic number.

100221212023 is a deficient number, since it is larger than the sum of its proper divisors (8481511337).

100221212023 is an equidigital number, since it uses as much as digits as its factorization.

100221212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 100221212023 its reverse (320212122001), we get a palindrome (420433334024).

The spelling of 100221212023 in words is "one hundred billion, two hundred twenty-one million, two hundred twelve thousand, twenty-three".