1300121231 has 2 divisors, whose sum is σ = 1300121232. Its totient is φ = 1300121230.

The previous prime is 1300121203. The next prime is 1300121233. The reversal of 1300121231 is 1321210031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1300121231 - 2¹⁰ = 1300120207 is a prime.

It is a super-2 number, since 2×1300121231² = 3380630430593910722, which contains 22 as substring.

Together with 1300121233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1300121233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650060615 + 650060616.

It is an arithmetic number, because the mean of its divisors is an integer number (650060616).

Almost surely, 2^1300121231 is an apocalyptic number.

1300121231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300121231 is an equidigital number, since it uses as much as digits as its factorization.

1300121231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1300121231 is about 36057.1938869347. The cubic root of 1300121231 is about 1091.4268078144.

Adding to 1300121231 its reverse (1321210031), we get a palindrome (2621331262).

The spelling of 1300121231 in words is "one billion, three hundred million, one hundred twenty-one thousand, two hundred thirty-one".