22401109 has 2 divisors, whose sum is σ = 22401110. Its totient is φ = 22401108.

The previous prime is 22401089. The next prime is 22401143. The reversal of 22401109 is 90110422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 2241009 = 4490^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 22401109 - 2⁵ = 22401077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22408109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200554 + 11200555.

It is an arithmetic number, because the mean of its divisors is an integer number (11200555).

Almost surely, 2^22401109 is an apocalyptic number.

It is an amenable number.

22401109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22401109 is an equidigital number, since it uses as much as digits as its factorization.

22401109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 22401109 is about 4732.9809845382. The cubic root of 22401109 is about 281.8966012620.

The spelling of 22401109 in words is "twenty-two million, four hundred one thousand, one hundred nine".