1111102020220 has 12 divisors (see below), whose sum is σ = 2333314242504. Its totient is φ = 444440808080.

The previous prime is 1111102020209. The next prime is 1111102020221. The reversal of 1111102020220 is 220202011111.

It is a self number, because there is not a number n which added to its sum of digits gives 1111102020220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111102020221) 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, 27777550486 + ... + 27777550525.

It is an arithmetic number, because the mean of its divisors is an integer number (194442853542).

Almost surely, 2^{1111102020220} is an apocalyptic number.

1111102020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111102020220 is an abundant number, since it is smaller than the sum of its proper divisors (1222212222284).

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

1111102020220 is a wasteful number, since it uses less digits than its factorization.

1111102020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55555101020 (or 55555101018 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1111102020220 its reverse (220202011111), we get a palindrome (1331304031331).

The spelling of 1111102020220 in words is "one trillion, one hundred eleven billion, one hundred two million, twenty thousand, two hundred twenty".