22201222020181 has 2 divisors, whose sum is σ = 22201222020182. Its totient is φ = 22201222020180.

The previous prime is 22201222020149. The next prime is 22201222020239. The reversal of 22201222020181 is 18102022210222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19301128823025 + 2900093197156 = 4393305^2 + 1702966^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201222020181 - 2⁵ = 22201222020149 is a prime.

It is a super-2 number, since 2×22201222020181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201222090181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100611010090 + 11100611010091.

It is an arithmetic number, because the mean of its divisors is an integer number (11100611010091).

Almost surely, 2^{22201222020181} is an apocalyptic number.

It is an amenable number.

22201222020181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201222020181 is an equidigital number, since it uses as much as digits as its factorization.

22201222020181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

The spelling of 22201222020181 in words is "twenty-two trillion, two hundred one billion, two hundred twenty-two million, twenty thousand, one hundred eighty-one".