22215232406 has 16 divisors (see below), whose sum is σ = 33378619968. Its totient is φ = 11089041600.

The previous prime is 22215232399. The next prime is 22215232423. The reversal of 22215232406 is 60423251222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5793866 + ... + 5797698.

It is an arithmetic number, because the mean of its divisors is an integer number (2086163748).

Almost surely, 2^22215232406 is an apocalyptic number.

22215232406 is a deficient number, since it is larger than the sum of its proper divisors (11163387562).

22215232406 is a wasteful number, since it uses less digits than its factorization.

22215232406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 22215232406 its reverse (60423251222), we get a palindrome (82638483628).

The spelling of 22215232406 in words is "twenty-two billion, two hundred fifteen million, two hundred thirty-two thousand, four hundred six".