203222013012 has 36 divisors (see below), whose sum is σ = 523392547860. Its totient is φ = 66462544512.

The previous prime is 203222012989. The next prime is 203222013013. The reversal of 203222013012 is 210310222302.

203222013012 is a `hidden beast` number, since 20 + 322 + 20 + 1 + 301 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 179000071056 + 24221941956 = 423084^2 + 155634^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203222013013) 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, 53253337 + ... + 53257152.

It is an arithmetic number, because the mean of its divisors is an integer number (14538681885).

Almost surely, 2^203222013012 is an apocalyptic number.

It is an amenable number.

203222013012 is an abundant number, since it is smaller than the sum of its proper divisors (320170534848).

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

203222013012 is a wasteful number, since it uses less digits than its factorization.

203222013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106510552 (or 106510547 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 203222013012 its reverse (210310222302), we get a palindrome (413532235314).

The spelling of 203222013012 in words is "two hundred three billion, two hundred twenty-two million, thirteen thousand, twelve".