11231220200020 has 48 divisors (see below), whose sum is σ = 24615667964160. Its totient is φ = 4296351251456.

The previous prime is 11231220200009. The next prime is 11231220200033. The reversal of 11231220200020 is 2000202213211.

It is a happy number.

It is a super-2 number, since 2×11231220200020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231220199967 and 11231220200003.

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, 137316 + ... + 4741444.

It is an arithmetic number, because the mean of its divisors is an integer number (512826415920).

Almost surely, 2^{11231220200020} is an apocalyptic number.

11231220200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231220200020 is an abundant number, since it is smaller than the sum of its proper divisors (13384447764140).

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

11231220200020 is a wasteful number, since it uses less digits than its factorization.

11231220200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4609464 (or 4609462 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11231220200020 its reverse (2000202213211), we get a palindrome (13231422413231).

The spelling of 11231220200020 in words is "eleven trillion, two hundred thirty-one billion, two hundred twenty million, two hundred thousand, twenty".