100021220222 has 32 divisors (see below), whose sum is σ = 187188516864. Its totient is φ = 38941005600.

The previous prime is 100021220191. The next prime is 100021220263. The reversal of 100021220222 is 222022120001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 100021220197 and 100021220206.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 22478 + ... + 447825.

It is an arithmetic number, because the mean of its divisors is an integer number (5849641152).

Almost surely, 2^100021220222 is an apocalyptic number.

100021220222 is a deficient number, since it is larger than the sum of its proper divisors (87167296642).

100021220222 is a wasteful number, since it uses less digits than its factorization.

100021220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471704.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 100021220222 its reverse (222022120001), we get a palindrome (322043340223).

The spelling of 100021220222 in words is "one hundred billion, twenty-one million, two hundred twenty thousand, two hundred twenty-two".