22001200210081 has 2 divisors, whose sum is σ = 22001200210082. Its totient is φ = 22001200210080.

The previous prime is 22001200210057. The next prime is 22001200210133. The reversal of 22001200210081 is 18001200210022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14930812849681 + 7070387360400 = 3864041^2 + 2659020^2 .

It is a cyclic number.

It is not a de Polignac number, because 22001200210081 - 2¹³ = 22001200201889 is a prime.

It is a super-2 number, since 2×22001200210081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22001200210481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000600105040 + 11000600105041.

It is an arithmetic number, because the mean of its divisors is an integer number (11000600105041).

Almost surely, 2^{22001200210081} is an apocalyptic number.

It is an amenable number.

22001200210081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001200210081 is an equidigital number, since it uses as much as digits as its factorization.

22001200210081 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.

The spelling of 22001200210081 in words is "twenty-two trillion, one billion, two hundred million, two hundred ten thousand, eighty-one".