201031223112 has 96 divisors (see below), whose sum is σ = 565937124480. Its totient is φ = 66854652480.

The previous prime is 201031223069. The next prime is 201031223179. The reversal of 201031223112 is 211322130102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 717898 + ... + 957830.

It is an arithmetic number, because the mean of its divisors is an integer number (5895178380).

Almost surely, 2^201031223112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201031223112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282968562240).

201031223112 is an abundant number, since it is smaller than the sum of its proper divisors (364905901368).

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

201031223112 is a wasteful number, since it uses less digits than its factorization.

201031223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240385 (or 240369 counting only the distinct ones).

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

Adding to 201031223112 its reverse (211322130102), we get a palindrome (412353353214).

The spelling of 201031223112 in words is "two hundred one billion, thirty-one million, two hundred twenty-three thousand, one hundred twelve".