2231213031012 has 48 divisors (see below), whose sum is σ = 6011240627840. Its totient is φ = 630917379072.

The previous prime is 2231213030999. The next prime is 2231213031017. The reversal of 2231213031012 is 2101303121322.

It is a super-3 number, since 3×2231213031012³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2231213031012.

It is not an unprimeable number, because it can be changed into a prime (2231213031017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136909687 + ... + 136925982.

Almost surely, 2^{2231213031012} is an apocalyptic number.

It is an amenable number.

2231213031012 is an abundant number, since it is smaller than the sum of its proper divisors (3780027596828).

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

2231213031012 is a wasteful number, since it uses less digits than its factorization.

2231213031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273835780 (or 273835778 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2231213031012 its reverse (2101303121322), we get a palindrome (4332516152334).

The spelling of 2231213031012 in words is "two trillion, two hundred thirty-one billion, two hundred thirteen million, thirty-one thousand, twelve".