1222355081 has 2 divisors, whose sum is σ = 1222355082. Its totient is φ = 1222355080.

The previous prime is 1222355011. The next prime is 1222355087. The reversal of 1222355081 is 1805532221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219057225 + 3297856 = 34915^2 + 1816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222355081 is a prime.

It is a super-2 number, since 2×1222355081² = 2988303888093033122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1222355087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611177540 + 611177541.

It is an arithmetic number, because the mean of its divisors is an integer number (611177541).

Almost surely, 2^1222355081 is an apocalyptic number.

It is an amenable number.

1222355081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222355081 is an equidigital number, since it uses as much as digits as its factorization.

1222355081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1222355081 is about 34962.1950254843. The cubic root of 1222355081 is about 1069.2168494214.

The spelling of 1222355081 in words is "one billion, two hundred twenty-two million, three hundred fifty-five thousand, eighty-one".