111222002100 has 108 divisors (see below), whose sum is σ = 353716721792. Its totient is φ = 26962900800.

The previous prime is 111222002081. The next prime is 111222002107. The reversal of 111222002100 is 1200222111.

It is a super-2 number, since 2×111222002100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222002107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1495684 + ... + 1568283.

Almost surely, 2^111222002100 is an apocalyptic number.

111222002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222002100 is an abundant number, since it is smaller than the sum of its proper divisors (242494719692).

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

111222002100 is a wasteful number, since it uses less digits than its factorization.

111222002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064006 (or 3063988 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111222002100 its reverse (1200222111), we get a palindrome (112422224211).

The spelling of 111222002100 in words is "one hundred eleven billion, two hundred twenty-two million, two thousand, one hundred".