1010112111220 has 12 divisors (see below), whose sum is σ = 2121235433604. Its totient is φ = 404044844480.

The previous prime is 1010112111193. The next prime is 1010112111227. The reversal of 1010112111220 is 221112110101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 747176987236 + 262935123984 = 864394^2 + 512772^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1010112111220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010112111227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25252802761 + ... + 25252802800.

It is an arithmetic number, because the mean of its divisors is an integer number (176769619467).

Almost surely, 2^{1010112111220} is an apocalyptic number.

1010112111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010112111220 is an abundant number, since it is smaller than the sum of its proper divisors (1111123322384).

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

1010112111220 is a wasteful number, since it uses less digits than its factorization.

1010112111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50505605570 (or 50505605568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1010112111220 its reverse (221112110101), we get a palindrome (1231224221321).

The spelling of 1010112111220 in words is "one trillion, ten billion, one hundred twelve million, one hundred eleven thousand, two hundred twenty".