1023300231221 has 4 divisors (see below), whose sum is σ = 1023385171500. Its totient is φ = 1023215290944.

The previous prime is 1023300231211. The next prime is 1023300231229. The reversal of 1023300231221 is 1221320033201.

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 453447358225 + 569852872996 = 673385^2 + 754886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023300231221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023300231193 and 1023300231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023300231229) 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, 42452066 + ... + 42476163.

It is an arithmetic number, because the mean of its divisors is an integer number (255846292875).

Almost surely, 2^{1023300231221} is an apocalyptic number.

It is an amenable number.

1023300231221 is a deficient number, since it is larger than the sum of its proper divisors (84940279).

1023300231221 is an equidigital number, since it uses as much as digits as its factorization.

1023300231221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84940278.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1023300231221 its reverse (1221320033201), we get a palindrome (2244620264422).

It can be divided in two parts, 1023300 and 231221, that added together give a palindrome (1254521).

The spelling of 1023300231221 in words is "one trillion, twenty-three billion, three hundred million, two hundred thirty-one thousand, two hundred twenty-one".