22320211212 has 72 divisors (see below), whose sum is σ = 61616449440. Its totient is φ = 6771018240.

The previous prime is 22320211211. The next prime is 22320211273. The reversal of 22320211212 is 21211202322.

22320211212 is a `hidden beast` number, since 223 + 20 + 211 + 212 = 666.

It is a super-3 number, since 3×22320211212³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22320211211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302637 + ... + 369092.

It is an arithmetic number, because the mean of its divisors is an integer number (855784020).

Almost surely, 2^22320211212 is an apocalyptic number.

It is an amenable number.

22320211212 is an abundant number, since it is smaller than the sum of its proper divisors (39296238228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22320211212 is a wasteful number, since it uses less digits than its factorization.

22320211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671823 (or 671818 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22320211212 its reverse (21211202322), we get a palindrome (43531413534).

The spelling of 22320211212 in words is "twenty-two billion, three hundred twenty million, two hundred eleven thousand, two hundred twelve".