22121429 has 8 divisors (see below), whose sum is σ = 24261120. Its totient is φ = 20003200.

The previous prime is 22121387. The next prime is 22121431. The reversal of 22121429 is 92412122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22121429 - 2⁸ = 22121173 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 (22121329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3164 + ... + 7365.

It is an arithmetic number, because the mean of its divisors is an integer number (3032640).

Almost surely, 2^22121429 is an apocalyptic number.

It is an amenable number.

22121429 is a deficient number, since it is larger than the sum of its proper divisors (2139691).

22121429 is a wasteful number, since it uses less digits than its factorization.

22121429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731.

The product of its digits is 576, while the sum is 23.

The square root of 22121429 is about 4703.3423222215. The cubic root of 22121429 is about 280.7185160129.

The spelling of 22121429 in words is "twenty-two million, one hundred twenty-one thousand, four hundred twenty-nine".