22131206 has 8 divisors (see below), whose sum is σ = 33219480. Its totient is φ = 11058048.

The previous prime is 22131199. The next prime is 22131211. The reversal of 22131206 is 60213122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (4152435).

Almost surely, 2^22131206 is an apocalyptic number.

22131206 is a deficient number, since it is larger than the sum of its proper divisors (11088274).

22131206 is a wasteful number, since it uses less digits than its factorization.

22131206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7558.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22131206 is about 4704.3815746599. The cubic root of 22131206 is about 280.7598662754.

Adding to 22131206 its reverse (60213122), we get a palindrome (82344328).

The spelling of 22131206 in words is "twenty-two million, one hundred thirty-one thousand, two hundred six".