1050440312221 has 4 divisors (see below), whose sum is σ = 1050461511552. Its totient is φ = 1050419112892.

The previous prime is 1050440312213. The next prime is 1050440312269. The reversal of 1050440312221 is 1222130440501.

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 1050440312221 - 2³ = 1050440312213 is a prime.

It is a super-2 number, since 2×1050440312221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050440012221) 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, 10525165 + ... + 10624498.

It is an arithmetic number, because the mean of its divisors is an integer number (262615377888).

Almost surely, 2^{1050440312221} is an apocalyptic number.

It is an amenable number.

1050440312221 is a deficient number, since it is larger than the sum of its proper divisors (21199331).

1050440312221 is an equidigital number, since it uses as much as digits as its factorization.

1050440312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21199330.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1050440312221 its reverse (1222130440501), we get a palindrome (2272570752722).

The spelling of 1050440312221 in words is "one trillion, fifty billion, four hundred forty million, three hundred twelve thousand, two hundred twenty-one".