212333121222 has 32 divisors (see below), whose sum is σ = 436247727072. Its totient is φ = 68848372224.

The previous prime is 212333121197. The next prime is 212333121229. The reversal of 212333121222 is 222121333212.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212333121192 and 212333121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212333121229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836688 + ... + 1060524.

It is an arithmetic number, because the mean of its divisors is an integer number (13632741471).

Almost surely, 2^212333121222 is an apocalyptic number.

212333121222 is an abundant number, since it is smaller than the sum of its proper divisors (223914605850).

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

212333121222 is a wasteful number, since it uses less digits than its factorization.

212333121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228152.

The product of its digits is 1728, while the sum is 24.

Adding to 212333121222 its reverse (222121333212), we get a palindrome (434454454434).

The spelling of 212333121222 in words is "two hundred twelve billion, three hundred thirty-three million, one hundred twenty-one thousand, two hundred twenty-two".