22211212006 has 4 divisors (see below), whose sum is σ = 33316818012. Its totient is φ = 11105606002.

The previous prime is 22211212003. The next prime is 22211212031. The reversal of 22211212006 is 60021211222.

22211212006 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211212003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5552803000 + ... + 5552803003.

It is an arithmetic number, because the mean of its divisors is an integer number (8329204503).

Almost surely, 2^22211212006 is an apocalyptic number.

22211212006 is a deficient number, since it is larger than the sum of its proper divisors (11105606006).

22211212006 is a wasteful number, since it uses less digits than its factorization.

22211212006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11105606005.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22211212006 its reverse (60021211222), we get a palindrome (82232423228).

The spelling of 22211212006 in words is "twenty-two billion, two hundred eleven million, two hundred twelve thousand, six".