211222223320 has 32 divisors (see below), whose sum is σ = 475307183520. Its totient is φ = 84478723840.

The previous prime is 211222223293. The next prime is 211222223341. The reversal of 211222223320 is 23322222112.

It is a super-2 number, since 2×211222223320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222223291 and 211222223300.

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, 23460 + ... + 650380.

It is an arithmetic number, because the mean of its divisors is an integer number (14853349485).

Almost surely, 2^211222223320 is an apocalyptic number.

211222223320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222223320 is an abundant number, since it is smaller than the sum of its proper divisors (264084960200).

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

211222223320 is a wasteful number, since it uses less digits than its factorization.

211222223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635355 (or 635351 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 211222223320 its reverse (23322222112), we get a palindrome (234544445432).

The spelling of 211222223320 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred twenty-three thousand, three hundred twenty".