100020222 has 48 divisors (see below), whose sum is σ = 224668080. Its totient is φ = 32138496.

The previous prime is 100020191. The next prime is 100020233. The reversal of 100020222 is 222020001.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55398 + ... + 57174.

It is an arithmetic number, because the mean of its divisors is an integer number (4680585).

Almost surely, 2^100020222 is an apocalyptic number.

100020222 is an abundant number, since it is smaller than the sum of its proper divisors (124647858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100020222 is a wasteful number, since it uses less digits than its factorization.

100020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 100020222 is about 10001.0110488890. The cubic root of 100020222 is about 464.1901686557.

Adding to 100020222 its reverse (222020001), we get a palindrome (322040223).

The spelling of 100020222 in words is "one hundred million, twenty thousand, two hundred twenty-two".