201112221202020 has 240 divisors, whose sum is σ = 652681311226560. Its totient is φ = 51778255705344.

The previous prime is 201112221201979. The next prime is 201112221202037. The reversal of 201112221202020 is 20202122211102.

It is a happy number.

It is a super-2 number, since 2×201112221202020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201112221201984 and 201112221202002.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1182072679 + ... + 1182242801.

It is an arithmetic number, because the mean of its divisors is an integer number (2719505463444).

Almost surely, 2^{201112221202020} is an apocalyptic number.

201112221202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201112221202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326340655613280).

201112221202020 is an abundant number, since it is smaller than the sum of its proper divisors (451569090024540).

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

201112221202020 is a wasteful number, since it uses less digits than its factorization.

201112221202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195336 (or 195325 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201112221202020 its reverse (20202122211102), we get a palindrome (221314343413122).

The spelling of 201112221202020 in words is "two hundred one trillion, one hundred twelve billion, two hundred twenty-one million, two hundred two thousand, twenty".