211220102222 has 16 divisors (see below), whose sum is σ = 318257370000. Its totient is φ = 105135369600.

The previous prime is 211220102189. The next prime is 211220102239. The reversal of 211220102222 is 222201022112.

It is a happy number.

It is a super-2 number, since 2×211220102222² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211220102222.

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, 136304 + ... + 664092.

It is an arithmetic number, because the mean of its divisors is an integer number (19891085625).

Almost surely, 2^211220102222 is an apocalyptic number.

211220102222 is a deficient number, since it is larger than the sum of its proper divisors (107037267778).

211220102222 is a wasteful number, since it uses less digits than its factorization.

211220102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528691.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211220102222 its reverse (222201022112), we get a palindrome (433421124334).

The spelling of 211220102222 in words is "two hundred eleven billion, two hundred twenty million, one hundred two thousand, two hundred twenty-two".