1021232031213 has 4 divisors (see below), whose sum is σ = 1361642708288. Its totient is φ = 680821354140.

The previous prime is 1021232031179. The next prime is 1021232031221. The reversal of 1021232031213 is 3121302321201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1021232031213 - 2⁹ = 1021232030701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021232031213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021232011213) 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, 170205338533 + ... + 170205338538.

It is an arithmetic number, because the mean of its divisors is an integer number (340410677072).

Almost surely, 2^{1021232031213} is an apocalyptic number.

It is an amenable number.

1021232031213 is a deficient number, since it is larger than the sum of its proper divisors (340410677075).

1021232031213 is an equidigital number, since it uses as much as digits as its factorization.

1021232031213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340410677074.

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

Adding to 1021232031213 its reverse (3121302321201), we get a palindrome (4142534352414).

The spelling of 1021232031213 in words is "one trillion, twenty-one billion, two hundred thirty-two million, thirty-one thousand, two hundred thirteen".