22201212401 has 2 divisors, whose sum is σ = 22201212402. Its totient is φ = 22201212400.

The previous prime is 22201212389. The next prime is 22201212431. The reversal of 22201212401 is 10421210222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22164063376 + 37149025 = 148876^2 + 6095^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201212401 - 2²² = 22197018097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22201212401.

It is not a weakly prime, because it can be changed into another prime (22201212431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100606200 + 11100606201.

It is an arithmetic number, because the mean of its divisors is an integer number (11100606201).

Almost surely, 2^22201212401 is an apocalyptic number.

It is an amenable number.

22201212401 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201212401 is an equidigital number, since it uses as much as digits as its factorization.

22201212401 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 17.

Adding to 22201212401 its reverse (10421210222), we get a palindrome (32622422623).

The spelling of 22201212401 in words is "twenty-two billion, two hundred one million, two hundred twelve thousand, four hundred one".