1130220123121 has 4 divisors (see below), whose sum is σ = 1130224691700. Its totient is φ = 1130215554544.

The previous prime is 1130220123083. The next prime is 1130220123167. The reversal of 1130220123121 is 1213210220311.

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 626375690721 + 503844432400 = 791439^2 + 709820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130220123121 - 2¹⁵ = 1130220090353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1130220153121) 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, 1890586 + ... + 2415523.

It is an arithmetic number, because the mean of its divisors is an integer number (282556172925).

Almost surely, 2^{1130220123121} is an apocalyptic number.

It is an amenable number.

1130220123121 is a deficient number, since it is larger than the sum of its proper divisors (4568579).

1130220123121 is an equidigital number, since it uses as much as digits as its factorization.

1130220123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568578.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1130220123121 its reverse (1213210220311), we get a palindrome (2343430343432).

The spelling of 1130220123121 in words is "one trillion, one hundred thirty billion, two hundred twenty million, one hundred twenty-three thousand, one hundred twenty-one".