111220100000010 has 96 divisors (see below), whose sum is σ = 306846564936912. Its totient is φ = 27853513021440.

The previous prime is 111220099999999. The next prime is 111220100000039. The reversal of 111220100000010 is 10000001022111.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 80593405528689 + 30626694471321 = 8977383^2 + 5534139^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 111220099999938 and 111220100000001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78137269 + ... + 79547928.

Almost surely, 2^{111220100000010} is an apocalyptic number.

111220100000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220100000010 is an abundant number, since it is smaller than the sum of its proper divisors (195626464936902).

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

111220100000010 is a wasteful number, since it uses less digits than its factorization.

111220100000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157685688 (or 157685685 counting only the distinct ones).

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

Adding to 111220100000010 its reverse (10000001022111), we get a palindrome (121220101022121).

The spelling of 111220100000010 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred million, ten", and thus it is an aban number.