111121011110020 has 48 divisors (see below), whose sum is σ = 234843162700608. Its totient is φ = 44164911277440.

The previous prime is 111121011109987. The next prime is 111121011110029. The reversal of 111121011110020 is 20011110121111.

It is a super-2 number, since 2×111121011110020² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111121011110029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9170662 + ... + 17502658.

It is an arithmetic number, because the mean of its divisors is an integer number (4892565889596).

Almost surely, 2^{111121011110020} is an apocalyptic number.

111121011110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111121011110020 is an abundant number, since it is smaller than the sum of its proper divisors (123722151590588).

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

111121011110020 is a wasteful number, since it uses less digits than its factorization.

111121011110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8336260 (or 8336258 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111121011110020 its reverse (20011110121111), we get a palindrome (131132121231131).

The spelling of 111121011110020 in words is "one hundred eleven trillion, one hundred twenty-one billion, eleven million, one hundred ten thousand, twenty".