201223031212 has 48 divisors (see below), whose sum is σ = 422520279552. Its totient is φ = 81982834560.

The previous prime is 201223031179. The next prime is 201223031221. The reversal of 201223031212 is 212130322102.

It is a self number, because there is not a number n which added to its sum of digits gives 201223031212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 853489 + ... + 1063432.

It is an arithmetic number, because the mean of its divisors is an integer number (8802505824).

Almost surely, 2^201223031212 is an apocalyptic number.

It is an amenable number.

201223031212 is an abundant number, since it is smaller than the sum of its proper divisors (221297248340).

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

201223031212 is a wasteful number, since it uses less digits than its factorization.

201223031212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917118 (or 1917116 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201223031212 its reverse (212130322102), we get a palindrome (413353353314).

The spelling of 201223031212 in words is "two hundred one billion, two hundred twenty-three million, thirty-one thousand, two hundred twelve".