22212212122210 has 48 divisors (see below), whose sum is σ = 43993546003008. Its totient is φ = 8068638411680.

The previous prime is 22212212122169. The next prime is 22212212122231. The reversal of 22212212122210 is 1222121221222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8546422 + ... + 10838161.

It is an arithmetic number, because the mean of its divisors is an integer number (916532208396).

Almost surely, 2^{22212212122210} is an apocalyptic number.

22212212122210 is a deficient number, since it is larger than the sum of its proper divisors (21781333880798).

22212212122210 is a wasteful number, since it uses less digits than its factorization.

22212212122210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19385559 (or 19385548 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22212212122210 its reverse (1222121221222), we get a palindrome (23434333343432).

The spelling of 22212212122210 in words is "twenty-two trillion, two hundred twelve billion, two hundred twelve million, one hundred twenty-two thousand, two hundred ten".