201133112220 has 72 divisors (see below), whose sum is σ = 626593085664. Its totient is φ = 52185886848.

The previous prime is 201133112209. The next prime is 201133112227. The reversal of 201133112220 is 22211331102.

201133112220 is a `hidden beast` number, since 20 + 113 + 311 + 2 + 220 = 666.

It is a super-2 number, since 2×201133112220² (a number of 23 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 = 201133112193 and 201133112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201133112227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15093424 + ... + 15106743.

Almost surely, 2^201133112220 is an apocalyptic number.

201133112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201133112220 is an abundant number, since it is smaller than the sum of its proper divisors (425459973444).

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

201133112220 is a wasteful number, since it uses less digits than its factorization.

201133112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30200219 (or 30200214 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201133112220 its reverse (22211331102), we get a palindrome (223344443322).

The spelling of 201133112220 in words is "two hundred one billion, one hundred thirty-three million, one hundred twelve thousand, two hundred twenty".