201220032112 has 60 divisors (see below), whose sum is σ = 429467578288. Its totient is φ = 91263110400.

The previous prime is 201220032073. The next prime is 201220032119. The reversal of 201220032112 is 211230022102.

It is a happy number.

It is a super-2 number, since 2×201220032112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220032119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 771037 + ... + 998467.

Almost surely, 2^201220032112 is an apocalyptic number.

201220032112 is a gapful number since it is divisible by the number (22) 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 201220032112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214733789144).

201220032112 is an abundant number, since it is smaller than the sum of its proper divisors (228247546176).

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

201220032112 is a wasteful number, since it uses less digits than its factorization.

201220032112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227918 (or 227901 counting only the distinct ones).

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

Adding to 201220032112 its reverse (211230022102), we get a palindrome (412450054214).

The spelling of 201220032112 in words is "two hundred one billion, two hundred twenty million, thirty-two thousand, one hundred twelve".