222122020100 has 18 divisors (see below), whose sum is σ = 482004783834. Its totient is φ = 88848808000.

The previous prime is 222122020097. The next prime is 222122020123. The reversal of 222122020100 is 1020221222.

It can be written as a sum of positive squares in 3 ways, for example, as 215296 + 222121804804 = 464^2 + 471298^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1110610001 + ... + 1110610200.

Almost surely, 2^222122020100 is an apocalyptic number.

222122020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222122020100 is an abundant number, since it is smaller than the sum of its proper divisors (259882763734).

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

222122020100 is a wasteful number, since it uses less digits than its factorization.

222122020100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221220215 (or 2221220208 counting only the distinct ones).

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

Adding to 222122020100 its reverse (1020221222), we get a palindrome (223142241322).

The spelling of 222122020100 in words is "two hundred twenty-two billion, one hundred twenty-two million, twenty thousand, one hundred".