1012213223321 has 4 divisors (see below), whose sum is σ = 1071755177652. Its totient is φ = 952671268992.

The previous prime is 1012213223311. The next prime is 1012213223387. The reversal of 1012213223321 is 1233223122101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 348046902025 + 664166321296 = 589955^2 + 814964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012213223321 - 2⁶ = 1012213223257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012213223311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29770977140 + ... + 29770977173.

It is an arithmetic number, because the mean of its divisors is an integer number (267938794413).

Almost surely, 2^{1012213223321} is an apocalyptic number.

It is an amenable number.

1012213223321 is a deficient number, since it is larger than the sum of its proper divisors (59541954331).

1012213223321 is an equidigital number, since it uses as much as digits as its factorization.

1012213223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59541954330.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1012213223321 its reverse (1233223122101), we get a palindrome (2245436345422).

The spelling of 1012213223321 in words is "one trillion, twelve billion, two hundred thirteen million, two hundred twenty-three thousand, three hundred twenty-one".