212123222322 has 48 divisors (see below), whose sum is σ = 468687897216. Its totient is φ = 63953428000.

The previous prime is 212123222279. The next prime is 212123222323. The reversal of 212123222322 is 223222321212.

It is a super-2 number, since 2×212123222322² (a number of 23 digits) contains 22 as substring.

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 = 212123222292 and 212123222301.

It is not an unprimeable number, because it can be changed into a prime (212123222323) 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, 598554 + ... + 884597.

It is an arithmetic number, because the mean of its divisors is an integer number (9764331192).

Almost surely, 2^212123222322 is an apocalyptic number.

212123222322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212123222322 is an abundant number, since it is smaller than the sum of its proper divisors (256564674894).

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

212123222322 is a wasteful number, since it uses less digits than its factorization.

212123222322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483375 (or 1483364 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

Adding to 212123222322 its reverse (223222321212), we get a palindrome (435345543534).

The spelling of 212123222322 in words is "two hundred twelve billion, one hundred twenty-three million, two hundred twenty-two thousand, three hundred twenty-two".