22140029 has 2 divisors, whose sum is σ = 22140030. Its totient is φ = 22140028.

The previous prime is 22139993. The next prime is 22140047. The reversal of 22140029 is 92004122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18472804 + 3667225 = 4298^2 + 1915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22140029 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 (22140049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070014 + 11070015.

It is an arithmetic number, because the mean of its divisors is an integer number (11070015).

Almost surely, 2^22140029 is an apocalyptic number.

It is an amenable number.

22140029 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140029 is an equidigital number, since it uses as much as digits as its factorization.

22140029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22140029 is about 4705.3192240272. The cubic root of 22140029 is about 280.7971712945.

The spelling of 22140029 in words is "twenty-two million, one hundred forty thousand, twenty-nine".