1231220022259 has 2 divisors, whose sum is σ = 1231220022260. Its totient is φ = 1231220022258.

The previous prime is 1231220022211. The next prime is 1231220022287. The reversal of 1231220022259 is 9522200221321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1231220022259 - 2³³ = 1222630087667 is a prime.

It is a super-2 number, since 2×1231220022259² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231220022259.

It is not a weakly prime, because it can be changed into another prime (1231220020259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615610011129 + 615610011130.

It is an arithmetic number, because the mean of its divisors is an integer number (615610011130).

Almost surely, 2^{1231220022259} is an apocalyptic number.

1231220022259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231220022259 is an equidigital number, since it uses as much as digits as its factorization.

1231220022259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 1231220022259 in words is "one trillion, two hundred thirty-one billion, two hundred twenty million, twenty-two thousand, two hundred fifty-nine".