212222120 has 32 divisors (see below), whose sum is σ = 520909920. Its totient is φ = 77171520.

The previous prime is 212222113. The next prime is 212222149. The reversal of 212222120 is 21222212.

It is a junction number, because it is equal to n+sod(n) for n = 212222095 and 212222104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240722 + ... + 241601.

It is an arithmetic number, because the mean of its divisors is an integer number (16278435).

Almost surely, 2^212222120 is an apocalyptic number.

212222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212222120 is an abundant number, since it is smaller than the sum of its proper divisors (308687800).

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

212222120 is a wasteful number, since it uses less digits than its factorization.

212222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482345 (or 482341 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212222120 is about 14567.8454137872. The cubic root of 212222120 is about 596.4813686889.

Adding to 212222120 its reverse (21222212), we get a palindrome (233444332).

It can be divided in two parts, 2122 and 22120, that added together give a palindrome (24242).

The spelling of 212222120 in words is "two hundred twelve million, two hundred twenty-two thousand, one hundred twenty".