22429081 has 2 divisors, whose sum is σ = 22429082. Its totient is φ = 22429080.

The previous prime is 22429079. The next prime is 22429159. The reversal of 22429081 is 18092422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 5953600 = 4059^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 22429081 - 2¹ = 22429079 is a prime.

It is a super-2 number, since 2×22429081² = 1006127349009122, which contains 22 as substring.

Together with 22429079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22429051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11214540 + 11214541.

It is an arithmetic number, because the mean of its divisors is an integer number (11214541).

Almost surely, 2^22429081 is an apocalyptic number.

It is an amenable number.

22429081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22429081 is an equidigital number, since it uses as much as digits as its factorization.

22429081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22429081 is about 4735.9350713455. The cubic root of 22429081 is about 282.0138861093.

The spelling of 22429081 in words is "twenty-two million, four hundred twenty-nine thousand, eighty-one".