222123111100 has 36 divisors (see below), whose sum is σ = 525825985608. Its totient is φ = 80772040000.

The previous prime is 222123111053. The next prime is 222123111109. The reversal of 222123111100 is 1111321222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123111109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100963951 + ... + 100966150.

It is an arithmetic number, because the mean of its divisors is an integer number (14606277378).

Almost surely, 2^222123111100 is an apocalyptic number.

222123111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222123111100 is an abundant number, since it is smaller than the sum of its proper divisors (303702874508).

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

222123111100 is a wasteful number, since it uses less digits than its factorization.

222123111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201930126 (or 201930119 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 222123111100 its reverse (1111321222), we get a palindrome (223234432322).

The spelling of 222123111100 in words is "two hundred twenty-two billion, one hundred twenty-three million, one hundred eleven thousand, one hundred".