22421210212 has 6 divisors (see below), whose sum is σ = 39237117878. Its totient is φ = 11210605104.

The previous prime is 22421210143. The next prime is 22421210233. The reversal of 22421210212 is 21201212422.

It can be written as a sum of positive squares in only one way, i.e., 21461078016 + 960132196 = 146496^2 + 30986^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22421210212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802651273 + ... + 2802651280.

Almost surely, 2^22421210212 is an apocalyptic number.

It is an amenable number.

22421210212 is a deficient number, since it is larger than the sum of its proper divisors (16815907666).

22421210212 is a wasteful number, since it uses less digits than its factorization.

22421210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605302557 (or 5605302555 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22421210212 its reverse (21201212422), we get a palindrome (43622422634).

The spelling of 22421210212 in words is "twenty-two billion, four hundred twenty-one million, two hundred ten thousand, two hundred twelve".