1112210100 has 54 divisors (see below), whose sum is σ = 3486163590. Its totient is φ = 296589120.

The previous prime is 1112210063. The next prime is 1112210107. The reversal of 1112210100 is 10122111.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 188293284 + 923916816 = 13722^2 + 30396^2 .

It is a super-2 number, since 2×1112210100² = 2474022613084020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112210107) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 616995 + ... + 618794.

It is an arithmetic number, because the mean of its divisors is an integer number (64558585).

Almost surely, 2^1112210100 is an apocalyptic number.

1112210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112210100 is an abundant number, since it is smaller than the sum of its proper divisors (2373953490).

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

1112210100 is a wasteful number, since it uses less digits than its factorization.

1112210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235809 (or 1235799 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1112210100 is about 33349.8140924354. The cubic root of 1112210100 is about 1036.0855375278.

Adding to 1112210100 its reverse (10122111), we get a palindrome (1122332211).

The spelling of 1112210100 in words is "one billion, one hundred twelve million, two hundred ten thousand, one hundred".