22101212111201 has 2 divisors, whose sum is σ = 22101212111202. Its totient is φ = 22101212111200.

The previous prime is 22101212111161. The next prime is 22101212111263. The reversal of 22101212111201 is 10211121210122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16964711142976 + 5136500968225 = 4118824^2 + 2266385^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101212111201 - 2²⁶ = 22101145002337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22101212111201.

It is not a weakly prime, because it can be changed into another prime (22101212111401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050606055600 + 11050606055601.

It is an arithmetic number, because the mean of its divisors is an integer number (11050606055601).

Almost surely, 2^{22101212111201} is an apocalyptic number.

It is an amenable number.

22101212111201 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101212111201 is an equidigital number, since it uses as much as digits as its factorization.

22101212111201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22101212111201 its reverse (10211121210122), we get a palindrome (32312333321323).

The spelling of 22101212111201 in words is "twenty-two trillion, one hundred one billion, two hundred twelve million, one hundred eleven thousand, two hundred one".