22121403 has 16 divisors (see below), whose sum is σ = 32309280. Its totient is φ = 13400576.

The previous prime is 22121387. The next prime is 22121431. The reversal of 22121403 is 30412122.

It is a cyclic number.

It is not a de Polignac number, because 22121403 - 2⁴ = 22121387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6000 + ... + 8957.

It is an arithmetic number, because the mean of its divisors is an integer number (2019330).

Almost surely, 2^22121403 is an apocalyptic number.

22121403 is a deficient number, since it is larger than the sum of its proper divisors (10187877).

22121403 is a wasteful number, since it uses less digits than its factorization.

22121403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22121403 is about 4703.3395582288. The cubic root of 22121403 is about 280.7184060338.

Adding to 22121403 its reverse (30412122), we get a palindrome (52533525).

The spelling of 22121403 in words is "twenty-two million, one hundred twenty-one thousand, four hundred three".