111011122021020 has 48 divisors (see below), whose sum is σ = 334741229481120. Its totient is φ = 27325814651136.

The previous prime is 111011122020979. The next prime is 111011122021043. The reversal of 111011122021020 is 20120221110111.

It is a happy number.

It is a super-3 number, since 3×111011122021020³ (a number of 43 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71160974875 + ... + 71160976434.

It is an arithmetic number, because the mean of its divisors is an integer number (6973775614190).

Almost surely, 2^{111011122021020} is an apocalyptic number.

111011122021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111011122021020 is an abundant number, since it is smaller than the sum of its proper divisors (223730107460100).

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

111011122021020 is a wasteful number, since it uses less digits than its factorization.

111011122021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142321951334 (or 142321951332 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111011122021020 its reverse (20120221110111), we get a palindrome (131131343131131).

The spelling of 111011122021020 in words is "one hundred eleven trillion, eleven billion, one hundred twenty-two million, twenty-one thousand, twenty".