1210120222081 has 2 divisors, whose sum is σ = 1210120222082. Its totient is φ = 1210120222080.

The previous prime is 1210120222033. The next prime is 1210120222111. The reversal of 1210120222081 is 1802220210121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1085380577856 + 124739644225 = 1041816^2 + 353185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210120222081 - 2¹⁷ = 1210120091009 is a prime.

It is a super-2 number, since 2×1210120222081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210120229081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605060111040 + 605060111041.

It is an arithmetic number, because the mean of its divisors is an integer number (605060111041).

Almost surely, 2^{1210120222081} is an apocalyptic number.

It is an amenable number.

1210120222081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210120222081 is an equidigital number, since it uses as much as digits as its factorization.

1210120222081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 1210120222081 in words is "one trillion, two hundred ten billion, one hundred twenty million, two hundred twenty-two thousand, eighty-one".