201131112222 has 24 divisors (see below), whose sum is σ = 447562025976. Its totient is φ = 65231711856.

The previous prime is 201131112191. The next prime is 201131112239. The reversal of 201131112222 is 222211131102.

201131112222 is a `hidden beast` number, since 201 + 131 + 112 + 222 = 666.

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 = 201131112195 and 201131112204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150998668 + ... + 150999999.

It is an arithmetic number, because the mean of its divisors is an integer number (18648417749).

Almost surely, 2^201131112222 is an apocalyptic number.

201131112222 is an abundant number, since it is smaller than the sum of its proper divisors (246430913754).

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

201131112222 is a wasteful number, since it uses less digits than its factorization.

201131112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301998712 (or 301998709 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201131112222 its reverse (222211131102), we get a palindrome (423342243324).

The spelling of 201131112222 in words is "two hundred one billion, one hundred thirty-one million, one hundred twelve thousand, two hundred twenty-two".