211321211222 has 16 divisors (see below), whose sum is σ = 357722427600. Its totient is φ = 92742851040.

The previous prime is 211321211207. The next prime is 211321211327. The reversal of 211321211222 is 222112123112.

It is a junction number, because it is equal to n+sod(n) for n = 211321211194 and 211321211203.

It is a congruent number.

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, 165611597 + ... + 165612872.

It is an arithmetic number, because the mean of its divisors is an integer number (22357651725).

Almost surely, 2^211321211222 is an apocalyptic number.

211321211222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211321211222 is a deficient number, since it is larger than the sum of its proper divisors (146401216378).

211321211222 is a wasteful number, since it uses less digits than its factorization.

211321211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331224511.

The product of its digits is 192, while the sum is 20.

Adding to 211321211222 its reverse (222112123112), we get a palindrome (433433334334).

The spelling of 211321211222 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred eleven thousand, two hundred twenty-two".