1231300222133 has 2 divisors, whose sum is σ = 1231300222134. Its totient is φ = 1231300222132.

The previous prime is 1231300222111. The next prime is 1231300222193. The reversal of 1231300222133 is 3312220031321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952033421284 + 279266800849 = 975722^2 + 528457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231300222133 - 2⁶ = 1231300222069 is a prime.

It is a super-2 number, since 2×1231300222133² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1231300222099 and 1231300222108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231300222193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615650111066 + 615650111067.

It is an arithmetic number, because the mean of its divisors is an integer number (615650111067).

Almost surely, 2^{1231300222133} is an apocalyptic number.

It is an amenable number.

1231300222133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231300222133 is an equidigital number, since it uses as much as digits as its factorization.

1231300222133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1231300222133 its reverse (3312220031321), we get a palindrome (4543520253454).

The spelling of 1231300222133 in words is "one trillion, two hundred thirty-one billion, three hundred million, two hundred twenty-two thousand, one hundred thirty-three".