22021123 has 2 divisors, whose sum is σ = 22021124. Its totient is φ = 22021122.

The previous prime is 22021093. The next prime is 22021151. The reversal of 22021123 is 32112022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021123 - 2⁹ = 22020611 is a prime.

It is a super-2 number, since 2×22021123² = 969859716362258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22021163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010561 + 11010562.

It is an arithmetic number, because the mean of its divisors is an integer number (11010562).

Almost surely, 2^22021123 is an apocalyptic number.

22021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021123 is an equidigital number, since it uses as much as digits as its factorization.

22021123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22021123 is about 4692.6669389591. Note that the first 3 decimals coincide. The cubic root of 22021123 is about 280.2935823749.

Adding to 22021123 its reverse (32112022), we get a palindrome (54133145).

The spelling of 22021123 in words is "twenty-two million, twenty-one thousand, one hundred twenty-three".