1224201807331 has 2 divisors, whose sum is σ = 1224201807332. Its totient is φ = 1224201807330.

The previous prime is 1224201807329. The next prime is 1224201807401. The reversal of 1224201807331 is 1337081024221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1224201807331 - 2¹ = 1224201807329 is a prime.

It is a super-2 number, since 2×1224201807331² (a number of 25 digits) contains 22 as substring.

Together with 1224201807329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1224201807431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612100903665 + 612100903666.

It is an arithmetic number, because the mean of its divisors is an integer number (612100903666).

Almost surely, 2^{1224201807331} is an apocalyptic number.

1224201807331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224201807331 is an equidigital number, since it uses as much as digits as its factorization.

1224201807331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 1224201807331 in words is "one trillion, two hundred twenty-four billion, two hundred one million, eight hundred seven thousand, three hundred thirty-one".