1210022200081 has 2 divisors, whose sum is σ = 1210022200082. Its totient is φ = 1210022200080.

The previous prime is 1210022200027. The next prime is 1210022200103. The reversal of 1210022200081 is 1800022200121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926136769600 + 283885430481 = 962360^2 + 532809^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210022200081 - 2²⁷ = 1209887982353 is a prime.

It is a super-2 number, since 2×1210022200081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210022200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605011100040 + 605011100041.

It is an arithmetic number, because the mean of its divisors is an integer number (605011100041).

Almost surely, 2^{1210022200081} is an apocalyptic number.

It is an amenable number.

1210022200081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210022200081 is an equidigital number, since it uses as much as digits as its factorization.

1210022200081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 1210022200081 in words is "one trillion, two hundred ten billion, twenty-two million, two hundred thousand, eighty-one".