1000232311021 has 4 divisors (see below), whose sum is σ = 1015161151552. Its totient is φ = 985303470492.

The previous prime is 1000232310997. The next prime is 1000232311049. The reversal of 1000232311021 is 1201132320001.

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 a cyclic number.

It is not a de Polignac number, because 1000232311021 - 2³¹ = 998084827373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000232310986 and 1000232311004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000232311081) 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, 7464420165 + ... + 7464420298.

It is an arithmetic number, because the mean of its divisors is an integer number (253790287888).

Almost surely, 2^{1000232311021} is an apocalyptic number.

It is an amenable number.

1000232311021 is a deficient number, since it is larger than the sum of its proper divisors (14928840531).

1000232311021 is an equidigital number, since it uses as much as digits as its factorization.

1000232311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14928840530.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1000232311021 its reverse (1201132320001), we get a palindrome (2201364631022).

The spelling of 1000232311021 in words is "one trillion, two hundred thirty-two million, three hundred eleven thousand, twenty-one".