211211101222222 has 32 divisors (see below), whose sum is σ = 339885716083200. Its totient is φ = 98136433752768.

The previous prime is 211211101222207. The next prime is 211211101222223. The reversal of 211211101222222 is 222222101112112.

It is a super-2 number, since 2×211211101222222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211101222193 and 211211101222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211101222223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102046038 + ... + 104095225.

It is an arithmetic number, because the mean of its divisors is an integer number (10621428627600).

Almost surely, 2^{211211101222222} is an apocalyptic number.

211211101222222 is a deficient number, since it is larger than the sum of its proper divisors (128674614860978).

211211101222222 is a wasteful number, since it uses less digits than its factorization.

211211101222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206141800.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211211101222222 its reverse (222222101112112), we get a palindrome (433433202334334).

The spelling of 211211101222222 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred one million, two hundred twenty-two thousand, two hundred twenty-two".