1222651259 has 2 divisors, whose sum is σ = 1222651260. Its totient is φ = 1222651258.

The previous prime is 1222651249. The next prime is 1222651291. The reversal of 1222651259 is 9521562221.

It is a weak prime.

It is an emirp because it is prime and its reverse (9521562221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222651259 - 2²⁸ = 954215803 is a prime.

It is a super-2 number, since 2×1222651259² = 2989752202268570162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222651219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611325629 + 611325630.

It is an arithmetic number, because the mean of its divisors is an integer number (611325630).

Almost surely, 2^1222651259 is an apocalyptic number.

1222651259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222651259 is an equidigital number, since it uses as much as digits as its factorization.

1222651259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 1222651259 is about 34966.4304583696. The cubic root of 1222651259 is about 1069.3031999260.

The spelling of 1222651259 in words is "one billion, two hundred twenty-two million, six hundred fifty-one thousand, two hundred fifty-nine".