111122011111020 has 192 divisors, whose sum is σ = 403098469831680. Its totient is φ = 22211548296192.

The previous prime is 111122011111003. The next prime is 111122011111049. The reversal of 111122011111020 is 20111110221111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 535475647 + ... + 535683126.

It is an arithmetic number, because the mean of its divisors is an integer number (2099471197040).

Almost surely, 2^{111122011111020} is an apocalyptic number.

111122011111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122011111020 is an abundant number, since it is smaller than the sum of its proper divisors (291976458720660).

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

111122011111020 is a wasteful number, since it uses less digits than its factorization.

111122011111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071158824 (or 1071158822 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111122011111020 its reverse (20111110221111), we get a palindrome (131233121332131).

The spelling of 111122011111020 in words is "one hundred eleven trillion, one hundred twenty-two billion, eleven million, one hundred eleven thousand, twenty".