1012220320231 has 4 divisors (see below), whose sum is σ = 1013794535992. Its totient is φ = 1010646104472.

The previous prime is 1012220320211. The next prime is 1012220320247. The reversal of 1012220320231 is 1320230222101.

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

It is a cyclic number.

It is not a de Polignac number, because 1012220320231 - 2¹⁹ = 1012219795943 is a prime.

It is a super-2 number, since 2×1012220320231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012220320199 and 1012220320208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012220320211) 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, 787106916 + ... + 787108201.

It is an arithmetic number, because the mean of its divisors is an integer number (253448633998).

Almost surely, 2^{1012220320231} is an apocalyptic number.

1012220320231 is a deficient number, since it is larger than the sum of its proper divisors (1574215761).

1012220320231 is an equidigital number, since it uses as much as digits as its factorization.

1012220320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574215760.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1012220320231 its reverse (1320230222101), we get a palindrome (2332450542332).

The spelling of 1012220320231 in words is "one trillion, twelve billion, two hundred twenty million, three hundred twenty thousand, two hundred thirty-one".