1023122142209 has 4 divisors (see below), whose sum is σ = 1023125458500. Its totient is φ = 1023118825920.

The previous prime is 1023122142179. The next prime is 1023122142221. The reversal of 1023122142209 is 9022412213201.

It is a happy number.

1023122142209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 265917611584 + 757204530625 = 515672^2 + 870175^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023122142209 - 2¹² = 1023122138113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023122142109) 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, 1141772 + ... + 1830269.

It is an arithmetic number, because the mean of its divisors is an integer number (255781364625).

Almost surely, 2^{1023122142209} is an apocalyptic number.

It is an amenable number.

1023122142209 is a deficient number, since it is larger than the sum of its proper divisors (3316291).

1023122142209 is an equidigital number, since it uses as much as digits as its factorization.

1023122142209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316290.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 1023122142209 in words is "one trillion, twenty-three billion, one hundred twenty-two million, one hundred forty-two thousand, two hundred nine".