1222523999 has 2 divisors, whose sum is σ = 1222524000. Its totient is φ = 1222523998.

The previous prime is 1222523987. The next prime is 1222524047. The reversal of 1222523999 is 9993252221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1222523999 - 2⁴ = 1222523983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222523299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611261999 + 611262000.

It is an arithmetic number, because the mean of its divisors is an integer number (611262000).

Almost surely, 2^1222523999 is an apocalyptic number.

1222523999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222523999 is an equidigital number, since it uses as much as digits as its factorization.

1222523999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 1222523999 is about 34964.6106656431. The cubic root of 1222523999 is about 1069.2660990641.

The spelling of 1222523999 in words is "one billion, two hundred twenty-two million, five hundred twenty-three thousand, nine hundred ninety-nine".