211212122222 has 8 divisors (see below), whose sum is σ = 316823592576. Its totient is φ = 105604258032.

The previous prime is 211212122207. The next prime is 211212122237. The reversal of 211212122222 is 222221212112.

211212122222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211212122207) and next prime (211212122237).

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

It is a super-2 number, since 2×211212122222² (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 = 211212122194 and 211212122203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750023 + ... + 992450.

It is an arithmetic number, because the mean of its divisors is an integer number (39602949072).

Almost surely, 2^211212122222 is an apocalyptic number.

211212122222 is a deficient number, since it is larger than the sum of its proper divisors (105611470354).

211212122222 is a wasteful number, since it uses less digits than its factorization.

211212122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803082.

The product of its digits is 256, while the sum is 20.

Adding to 211212122222 its reverse (222221212112), we get a palindrome (433433334334).

The spelling of 211212122222 in words is "two hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty-two".