100021102221 has 16 divisors (see below), whose sum is σ = 139287297600. Its totient is φ = 63778912128.

The previous prime is 100021102211. The next prime is 100021102319. The reversal of 100021102221 is 122201120001.

It is not a de Polignac number, because 100021102221 - 2¹⁰ = 100021101197 is a prime.

It is a super-2 number, since 2×100021102221² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100021102197 and 100021102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021102211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7629816 + ... + 7642913.

It is an arithmetic number, because the mean of its divisors is an integer number (8705456100).

Almost surely, 2^100021102221 is an apocalyptic number.

It is an amenable number.

100021102221 is a deficient number, since it is larger than the sum of its proper divisors (39266195379).

100021102221 is a wasteful number, since it uses less digits than its factorization.

100021102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272828.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 100021102221 its reverse (122201120001), we get a palindrome (222222222222).

The spelling of 100021102221 in words is "one hundred billion, twenty-one million, one hundred two thousand, two hundred twenty-one".