22129211 has 8 divisors (see below), whose sum is σ = 24119760. Its totient is φ = 20179872.

The previous prime is 22129193. The next prime is 22129213. The reversal of 22129211 is 11292122.

It is a happy number.

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 22129211 - 2¹⁸ = 21867067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22129213) 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, 9176 + ... + 11333.

It is an arithmetic number, because the mean of its divisors is an integer number (3014970).

Almost surely, 2^22129211 is an apocalyptic number.

22129211 is a deficient number, since it is larger than the sum of its proper divisors (1990549).

22129211 is a wasteful number, since it uses less digits than its factorization.

22129211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20605.

The product of its digits is 144, while the sum is 20.

The square root of 22129211 is about 4704.1695335096. The cubic root of 22129211 is about 280.7514297301.

The spelling of 22129211 in words is "twenty-two million, one hundred twenty-nine thousand, two hundred eleven".