222222201020100 has 54 divisors (see below), whose sum is σ = 696543143422490. Its totient is φ = 59259253605120.

The previous prime is 222222201020087. The next prime is 222222201020233. The reversal of 222222201020100 is 1020102222222.

222222201020100 is a `hidden beast` number, since 22 + 222 + 220 + 1 + 0 + 201 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 59186434065984 + 163035766954116 = 7693272^2 + 12768546^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 123456777445 + ... + 123456779244.

Almost surely, 2^{222222201020100} is an apocalyptic number.

222222201020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222201020100 is an abundant number, since it is smaller than the sum of its proper divisors (474320942402390).

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

222222201020100 is a wasteful number, since it uses less digits than its factorization.

222222201020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246913556709 (or 246913556699 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222222201020100 its reverse (1020102222222), we get a palindrome (223242303242322).

The spelling of 222222201020100 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred one million, twenty thousand, one hundred".