22121411 has 4 divisors (see below), whose sum is σ = 23823072. Its totient is φ = 20419752.

The previous prime is 22121387. The next prime is 22121431. The reversal of 22121411 is 11412122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121411 - 2⁶ = 22121347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121431) 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, 850811 + ... + 850836.

It is an arithmetic number, because the mean of its divisors is an integer number (5955768).

Almost surely, 2^22121411 is an apocalyptic number.

22121411 is a deficient number, since it is larger than the sum of its proper divisors (1701661).

22121411 is a wasteful number, since it uses less digits than its factorization.

22121411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701660.

The product of its digits is 32, while the sum is 14.

The square root of 22121411 is about 4703.3404086883. The cubic root of 22121411 is about 280.7184398735.

Adding to 22121411 its reverse (11412122), we get a palindrome (33533533).

The spelling of 22121411 in words is "twenty-two million, one hundred twenty-one thousand, four hundred eleven".