222120000100 has 18 divisors (see below), whose sum is σ = 482000400434. Its totient is φ = 88848000000.

The previous prime is 222120000079. The next prime is 222120000149. The reversal of 222120000100 is 1000021222.

It can be written as a sum of positive squares in 3 ways, for example, as 587868516 + 221532131584 = 24246^2 + 470672^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 1110599901 + ... + 1110600100.

Almost surely, 2^222120000100 is an apocalyptic number.

222120000100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120000100 is an abundant number, since it is smaller than the sum of its proper divisors (259880400334).

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

222120000100 is a wasteful number, since it uses less digits than its factorization.

222120000100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221200015 (or 2221200008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 222120000100 its reverse (1000021222), we get a palindrome (223120021322).

The spelling of 222120000100 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred", and thus it is an aban number.