1222513081 has 2 divisors, whose sum is σ = 1222513082. Its totient is φ = 1222513080.

The previous prime is 1222513079. The next prime is 1222513087. The reversal of 1222513081 is 1803152221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1006158400 + 216354681 = 31720^2 + 14709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222513081 - 2¹ = 1222513079 is a prime.

It is a super-2 number, since 2×1222513081² = 2989076466432225122, which contains 22 as substring.

Together with 1222513079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1222513087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611256540 + 611256541.

It is an arithmetic number, because the mean of its divisors is an integer number (611256541).

Almost surely, 2^1222513081 is an apocalyptic number.

It is an amenable number.

1222513081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222513081 is an equidigital number, since it uses as much as digits as its factorization.

1222513081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1222513081 is about 34964.4545359998. The cubic root of 1222513081 is about 1069.2629159549.

The spelling of 1222513081 in words is "one billion, two hundred twenty-two million, five hundred thirteen thousand, eighty-one".