22120429 has 4 divisors (see below), whose sum is σ = 22151584. Its totient is φ = 22089276.

The previous prime is 22120393. The next prime is 22120433. The reversal of 22120429 is 92402122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92402122 = 2 ⋅46201061.

It is a cyclic number.

It is not a de Polignac number, because 22120429 - 2⁹ = 22119917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14487 + ... + 15940.

It is an arithmetic number, because the mean of its divisors is an integer number (5537896).

Almost surely, 2^22120429 is an apocalyptic number.

It is an amenable number.

22120429 is a deficient number, since it is larger than the sum of its proper divisors (31155).

22120429 is an equidigital number, since it uses as much as digits as its factorization.

22120429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31154.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22120429 is about 4703.2360136400. The cubic root of 22120429 is about 280.7142859856.

The spelling of 22120429 in words is "twenty-two million, one hundred twenty thousand, four hundred twenty-nine".