222012111100 has 72 divisors (see below), whose sum is σ = 521284757168. Its totient is φ = 81585100800.

The previous prime is 222012111091. The next prime is 222012111119. The reversal of 222012111100 is 1111210222.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 130389 + ... + 678988.

Almost surely, 2^222012111100 is an apocalyptic number.

222012111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222012111100 is an abundant number, since it is smaller than the sum of its proper divisors (299272646068).

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

222012111100 is a wasteful number, since it uses less digits than its factorization.

222012111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809615 (or 809608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 222012111100 its reverse (1111210222), we get a palindrome (223123321322).

The spelling of 222012111100 in words is "two hundred twenty-two billion, twelve million, one hundred eleven thousand, one hundred".