212111110002222 has 48 divisors (see below), whose sum is σ = 464130567641520. Its totient is φ = 70002722832000.

The previous prime is 212111110002193. The next prime is 212111110002227. The reversal of 212111110002222 is 222200011111212.

It is a super-2 number, since 2×212111110002222² (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 a junction number, because it is equal to n+sod(n) for n = 212111110002195 and 212111110002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111110002227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141131029 + ... + 142626047.

It is an arithmetic number, because the mean of its divisors is an integer number (9669386825865).

Almost surely, 2^{212111110002222} is an apocalyptic number.

212111110002222 is an abundant number, since it is smaller than the sum of its proper divisors (252019457639298).

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

212111110002222 is a wasteful number, since it uses less digits than its factorization.

212111110002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573169 (or 1573166 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212111110002222 its reverse (222200011111212), we get a palindrome (434311121113434).

The spelling of 212111110002222 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred ten million, two thousand, two hundred twenty-two".