1311222301 has 4 divisors (see below), whose sum is σ = 1311297372. Its totient is φ = 1311147232.

The previous prime is 1311222293. The next prime is 1311222307. The reversal of 1311222301 is 1032221131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 61246276 + 1249976025 = 7826^2 + 35355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311222301 - 2³ = 1311222293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311222307) 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, 3945 + ... + 51361.

It is an arithmetic number, because the mean of its divisors is an integer number (327824343).

Almost surely, 2^1311222301 is an apocalyptic number.

It is an amenable number.

1311222301 is a deficient number, since it is larger than the sum of its proper divisors (75071).

1311222301 is an equidigital number, since it uses as much as digits as its factorization.

1311222301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75070.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1311222301 is about 36210.8036502920. The cubic root of 1311222301 is about 1094.5243866236.

Adding to 1311222301 its reverse (1032221131), we get a palindrome (2343443432).

The spelling of 1311222301 in words is "one billion, three hundred eleven million, two hundred twenty-two thousand, three hundred one".