211212122 has 8 divisors (see below), whose sum is σ = 345619872. Its totient is φ = 96005500.

The previous prime is 211212121. The next prime is 211212137. The reversal of 211212122 is 221212112.

211212122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211212122² = 89221120959485768, which 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 = 211212097 and 211212106.

It is not an unprimeable number, because it can be changed into a prime (211212121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4800254 + ... + 4800297.

It is an arithmetic number, because the mean of its divisors is an integer number (43202484).

Almost surely, 2^211212122 is an apocalyptic number.

211212122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211212122 is a deficient number, since it is larger than the sum of its proper divisors (134407750).

211212122 is a wasteful number, since it uses less digits than its factorization.

211212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9600564.

The product of its digits is 32, while the sum is 14.

The square root of 211212122 is about 14533.1387525200. The cubic root of 211212122 is about 595.5336144616.

Adding to 211212122 its reverse (221212112), we get a palindrome (432424234).

The spelling of 211212122 in words is "two hundred eleven million, two hundred twelve thousand, one hundred twenty-two".