1300121311 has 4 divisors (see below), whose sum is σ = 1312743952. Its totient is φ = 1287498672.

The previous prime is 1300121309. The next prime is 1300121321. The reversal of 1300121311 is 1131210031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1300121311 - 2¹ = 1300121309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300121291 and 1300121300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300121321) 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, 6311166 + ... + 6311371.

It is an arithmetic number, because the mean of its divisors is an integer number (328185988).

Almost surely, 2^1300121311 is an apocalyptic number.

1300121311 is a deficient number, since it is larger than the sum of its proper divisors (12622641).

1300121311 is a wasteful number, since it uses less digits than its factorization.

1300121311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12622640.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1300121311 is about 36057.1949962833. The cubic root of 1300121311 is about 1091.4268302006.

Adding to 1300121311 its reverse (1131210031), we get a palindrome (2431331342).

The spelling of 1300121311 in words is "one billion, three hundred million, one hundred twenty-one thousand, three hundred eleven".