1013122021129 has 4 divisors (see below), whose sum is σ = 1013133170500. Its totient is φ = 1013110871760.

The previous prime is 1013122021091. The next prime is 1013122021133. The reversal of 1013122021129 is 9211202213101.

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 810626521104 + 202495500025 = 900348^2 + 449995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013122021129 - 2⁷ = 1013122021001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013122021829) 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, 5437254 + ... + 5620495.

It is an arithmetic number, because the mean of its divisors is an integer number (253283292625).

Almost surely, 2^{1013122021129} is an apocalyptic number.

It is an amenable number.

1013122021129 is a deficient number, since it is larger than the sum of its proper divisors (11149371).

1013122021129 is an equidigital number, since it uses as much as digits as its factorization.

1013122021129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11149370.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1013122021129 in words is "one trillion, thirteen billion, one hundred twenty-two million, twenty-one thousand, one hundred twenty-nine".