1021312130233 has 4 divisors (see below), whose sum is σ = 1021319368948. Its totient is φ = 1021304891520.

The previous prime is 1021312130231. The next prime is 1021312130249. The reversal of 1021312130233 is 3320312131201.

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 85162997929 + 936149132304 = 291827^2 + 967548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021312130233 - 2¹ = 1021312130231 is a prime.

It is a super-2 number, since 2×1021312130233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021312130231) 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, 3403428 + ... + 3691333.

It is an arithmetic number, because the mean of its divisors is an integer number (255329842237).

Almost surely, 2^{1021312130233} is an apocalyptic number.

It is an amenable number.

1021312130233 is a deficient number, since it is larger than the sum of its proper divisors (7238715).

1021312130233 is an equidigital number, since it uses as much as digits as its factorization.

1021312130233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7238714.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1021312130233 its reverse (3320312131201), we get a palindrome (4341624261434).

The spelling of 1021312130233 in words is "one trillion, twenty-one billion, three hundred twelve million, one hundred thirty thousand, two hundred thirty-three".