22251101 has 2 divisors, whose sum is σ = 22251102. Its totient is φ = 22251100.

The previous prime is 22251077. The next prime is 22251107. The reversal of 22251101 is 10115222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 1503076 = 4555^2 + 1226^2 .

It is a cyclic number.

It is not a de Polignac number, because 22251101 - 2⁶ = 22251037 is a prime.

It is a super-2 number, since 2×22251101² = 990222991424402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22251107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11125550 + 11125551.

It is an arithmetic number, because the mean of its divisors is an integer number (11125551).

Almost surely, 2^22251101 is an apocalyptic number.

It is an amenable number.

22251101 is a deficient number, since it is larger than the sum of its proper divisors (1).

22251101 is an equidigital number, since it uses as much as digits as its factorization.

22251101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 22251101 is about 4717.1072703512. The cubic root of 22251101 is about 281.2659555722.

Adding to 22251101 its reverse (10115222), we get a palindrome (32366323).

The spelling of 22251101 in words is "twenty-two million, two hundred fifty-one thousand, one hundred one".