111202020101020 has 24 divisors (see below), whose sum is σ = 247260962343024. Its totient is φ = 41864289920256.

The previous prime is 111202020100961. The next prime is 111202020101021. The reversal of 111202020101020 is 20101020202111.

It is a super-2 number, since 2×111202020101020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111202020101021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163532382162 + ... + 163532382841.

It is an arithmetic number, because the mean of its divisors is an integer number (10302540097626).

Almost surely, 2^{111202020101020} is an apocalyptic number.

111202020101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111202020101020 is an abundant number, since it is smaller than the sum of its proper divisors (136058942242004).

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

111202020101020 is a wasteful number, since it uses less digits than its factorization.

111202020101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327064765029 (or 327064765027 counting only the distinct ones).

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

Adding to 111202020101020 its reverse (20101020202111), we get a palindrome (131303040303131).

The spelling of 111202020101020 in words is "one hundred eleven trillion, two hundred two billion, twenty million, one hundred one thousand, twenty".