1023440223121 has 4 divisors (see below), whose sum is σ = 1023443087472. Its totient is φ = 1023437358772.

The previous prime is 1023440223007. The next prime is 1023440223131. The reversal of 1023440223121 is 1213220443201.

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 1023440223121 - 2⁷ = 1023440222993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023440223131) 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, 804535 + ... + 1641388.

It is an arithmetic number, because the mean of its divisors is an integer number (255860771868).

Almost surely, 2^{1023440223121} is an apocalyptic number.

It is an amenable number.

1023440223121 is a deficient number, since it is larger than the sum of its proper divisors (2864351).

1023440223121 is an equidigital number, since it uses as much as digits as its factorization.

1023440223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864350.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1023440223121 its reverse (1213220443201), we get a palindrome (2236660666322).

The spelling of 1023440223121 in words is "one trillion, twenty-three billion, four hundred forty million, two hundred twenty-three thousand, one hundred twenty-one".