22012829 has 2 divisors, whose sum is σ = 22012830. Its totient is φ = 22012828.

The previous prime is 22012819. The next prime is 22012831. The reversal of 22012829 is 92821022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13468900 + 8543929 = 3670^2 + 2923^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012829 - 2¹⁶ = 21947293 is a prime.

Together with 22012831, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22012798 and 22012807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22012819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006414 + 11006415.

It is an arithmetic number, because the mean of its divisors is an integer number (11006415).

Almost surely, 2^22012829 is an apocalyptic number.

It is an amenable number.

22012829 is a deficient number, since it is larger than the sum of its proper divisors (1).

22012829 is an equidigital number, since it uses as much as digits as its factorization.

22012829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22012829 is about 4691.7831365058. The cubic root of 22012829 is about 280.2583881829.

The spelling of 22012829 in words is "twenty-two million, twelve thousand, eight hundred twenty-nine".