1242222232081 has 2 divisors, whose sum is σ = 1242222232082. Its totient is φ = 1242222232080.

The previous prime is 1242222232073. The next prime is 1242222232093. The reversal of 1242222232081 is 1802322222421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942033301056 + 300188931025 = 970584^2 + 547895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242222232081 - 2³ = 1242222232073 is a prime.

It is a super-2 number, since 2×1242222232081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1242222232681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621111116040 + 621111116041.

It is an arithmetic number, because the mean of its divisors is an integer number (621111116041).

Almost surely, 2^{1242222232081} is an apocalyptic number.

It is an amenable number.

1242222232081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242222232081 is an equidigital number, since it uses as much as digits as its factorization.

1242222232081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 1242222232081 in words is "one trillion, two hundred forty-two billion, two hundred twenty-two million, two hundred thirty-two thousand, eighty-one".