1301311021229 has 4 divisors (see below), whose sum is σ = 1319137199676. Its totient is φ = 1283484842784.

The previous prime is 1301311021189. The next prime is 1301311021247. The reversal of 1301311021229 is 9221201131031.

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 952829776900 + 348481244329 = 976130^2 + 590323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1301311021229 - 2²⁰ = 1301309972653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301311021198 and 1301311021207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301311011229) 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, 8913089114 + ... + 8913089259.

It is an arithmetic number, because the mean of its divisors is an integer number (329784299919).

Almost surely, 2^{1301311021229} is an apocalyptic number.

It is an amenable number.

1301311021229 is a deficient number, since it is larger than the sum of its proper divisors (17826178447).

1301311021229 is an equidigital number, since it uses as much as digits as its factorization.

1301311021229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17826178446.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 1301311021229 in words is "one trillion, three hundred one billion, three hundred eleven million, twenty-one thousand, two hundred twenty-nine".