111020001111220 has 72 divisors (see below), whose sum is σ = 249854666554584. Its totient is φ = 41425890852864.

The previous prime is 111020001111181. The next prime is 111020001111301. The reversal of 111020001111220 is 22111100020111.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 19453551141924 + 91566449969296 = 4410618^2 + 9569036^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111020001111220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84336297 + ... + 85642576.

It is an arithmetic number, because the mean of its divisors is an integer number (3470203702147).

Almost surely, 2^{111020001111220} is an apocalyptic number.

111020001111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111020001111220 is an abundant number, since it is smaller than the sum of its proper divisors (138834665443364).

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

111020001111220 is a wasteful number, since it uses less digits than its factorization.

111020001111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169979029 (or 169979010 counting only the distinct ones).

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

Adding to 111020001111220 its reverse (22111100020111), we get a palindrome (133131101131331).

The spelling of 111020001111220 in words is "one hundred eleven trillion, twenty billion, one million, one hundred eleven thousand, two hundred twenty".