211222220100210 has 48 divisors (see below), whose sum is σ = 599103024287040. Its totient is φ = 51205386690720.

The previous prime is 211222220100193. The next prime is 211222220100233. The reversal of 211222220100210 is 12001022222112.

It is a happy number.

211222220100210 is a `hidden beast` number, since 2 + 1 + 1 + 222 + 220 + 10 + 0 + 210 = 666.

It is a super-2 number, since 2×211222220100210² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 23 ways as a sum of consecutive naturals, for example, 106677887950 + ... + 106677889929.

It is an arithmetic number, because the mean of its divisors is an integer number (12481313005980).

Almost surely, 2^{211222220100210} is an apocalyptic number.

211222220100210 is an abundant number, since it is smaller than the sum of its proper divisors (387880804186830).

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

211222220100210 is a wasteful number, since it uses less digits than its factorization.

211222220100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213355777903 (or 213355777900 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211222220100210 its reverse (12001022222112), we get a palindrome (223223242322322).

The spelling of 211222220100210 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty million, one hundred thousand, two hundred ten".