22401143 has 2 divisors, whose sum is σ = 22401144. Its totient is φ = 22401142.

The previous prime is 22401109. The next prime is 22401157. The reversal of 22401143 is 34110422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22401143 - 2⁸ = 22400887 is a prime.

It is a super-2 number, since 2×22401143² = 1003622415412898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22401163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200571 + 11200572.

It is an arithmetic number, because the mean of its divisors is an integer number (11200572).

Almost surely, 2^22401143 is an apocalyptic number.

22401143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22401143 is an equidigital number, since it uses as much as digits as its factorization.

22401143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22401143 is about 4732.9845763535. The cubic root of 22401143 is about 281.8967438811.

Adding to 22401143 its reverse (34110422), we get a palindrome (56511565).

The spelling of 22401143 in words is "twenty-two million, four hundred one thousand, one hundred forty-three".