22315201901 has 2 divisors, whose sum is σ = 22315201902. Its totient is φ = 22315201900.

The previous prime is 22315201891. The next prime is 22315201921. The reversal of 22315201901 is 10910251322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11352902500 + 10962299401 = 106550^2 + 104701^2 .

It is a cyclic number.

It is not a de Polignac number, because 22315201901 - 2¹⁰ = 22315200877 is a prime.

It is a super-3 number, since 3×22315201901³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22315201921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11157600950 + 11157600951.

It is an arithmetic number, because the mean of its divisors is an integer number (11157600951).

Almost surely, 2^22315201901 is an apocalyptic number.

It is an amenable number.

22315201901 is a deficient number, since it is larger than the sum of its proper divisors (1).

22315201901 is an equidigital number, since it uses as much as digits as its factorization.

22315201901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 22315201901 in words is "twenty-two billion, three hundred fifteen million, two hundred one thousand, nine hundred one".