2231033121012 has 24 divisors (see below), whose sum is σ = 5432080643136. Its totient is φ = 711343893568.

The previous prime is 2231033121011. The next prime is 2231033121133. The reversal of 2231033121012 is 2101213301322.

It is a super-3 number, since 3×2231033121012³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231033121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231033121011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4041726393 + ... + 4041726944.

It is an arithmetic number, because the mean of its divisors is an integer number (226336693464).

Almost surely, 2^{2231033121012} is an apocalyptic number.

It is an amenable number.

2231033121012 is an abundant number, since it is smaller than the sum of its proper divisors (3201047522124).

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

2231033121012 is a wasteful number, since it uses less digits than its factorization.

2231033121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8083453367 (or 8083453365 counting only the distinct ones).

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

Adding to 2231033121012 its reverse (2101213301322), we get a palindrome (4332246422334).

The spelling of 2231033121012 in words is "two trillion, two hundred thirty-one billion, thirty-three million, one hundred twenty-one thousand, twelve".