1013121430129 has 4 divisors (see below), whose sum is σ = 1013130098676. Its totient is φ = 1013112761584.

The previous prime is 1013121430049. The next prime is 1013121430163. The reversal of 1013121430129 is 9210341213101.

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 70713446400 + 942407983729 = 265920^2 + 970777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013121430129 - 2²⁵ = 1013087875697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013121430097 and 1013121430106.

It is not an unprimeable number, because it can be changed into a prime (1013121431129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4156534 + ... + 4393519.

It is an arithmetic number, because the mean of its divisors is an integer number (253282524669).

Almost surely, 2^{1013121430129} is an apocalyptic number.

It is an amenable number.

1013121430129 is a deficient number, since it is larger than the sum of its proper divisors (8668547).

1013121430129 is an equidigital number, since it uses as much as digits as its factorization.

1013121430129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8668546.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 1013121430129 in words is "one trillion, thirteen billion, one hundred twenty-one million, four hundred thirty thousand, one hundred twenty-nine".