212223320022 has 128 divisors (see below), whose sum is σ = 517302743040. Its totient is φ = 56748625920.

The previous prime is 212223320009. The next prime is 212223320027. The reversal of 212223320022 is 220023322212.

It is a super-2 number, since 2×212223320022² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212223320027) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12204198 + ... + 12221574.

It is an arithmetic number, because the mean of its divisors is an integer number (4041427680).

Almost surely, 2^212223320022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212223320022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258651371520).

212223320022 is an abundant number, since it is smaller than the sum of its proper divisors (305079423018).

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

212223320022 is a wasteful number, since it uses less digits than its factorization.

212223320022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17726.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 212223320022 its reverse (220023322212), we get a palindrome (432246642234).

The spelling of 212223320022 in words is "two hundred twelve billion, two hundred twenty-three million, three hundred twenty thousand, twenty-two".