1012220200081 has 2 divisors, whose sum is σ = 1012220200082. Its totient is φ = 1012220200080.

The previous prime is 1012220199971. The next prime is 1012220200093. The reversal of 1012220200081 is 1800020222101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1001490555025 + 10729645056 = 1000745^2 + 103584^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012220200081 - 2¹³ = 1012220191889 is a prime.

It is a super-2 number, since 2×1012220200081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012220600081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110100040 + 506110100041.

It is an arithmetic number, because the mean of its divisors is an integer number (506110100041).

Almost surely, 2^{1012220200081} is an apocalyptic number.

It is an amenable number.

1012220200081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012220200081 is an equidigital number, since it uses as much as digits as its factorization.

1012220200081 is an evil number, because the sum of its binary digits is even.

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

Adding to 1012220200081 its reverse (1800020222101), we get a palindrome (2812240422182).

The spelling of 1012220200081 in words is "one trillion, twelve billion, two hundred twenty million, two hundred thousand, eighty-one".