10211111222222 has 8 divisors (see below), whose sum is σ = 15318763018776. Its totient is φ = 5104856882632.

The previous prime is 10211111222203. The next prime is 10211111222243. The reversal of 10211111222222 is 22222211111201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 10211111222194 and 10211111222203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349345973 + ... + 349375200.

It is an arithmetic number, because the mean of its divisors is an integer number (1914845377347).

Almost surely, 2^{10211111222222} is an apocalyptic number.

10211111222222 is a deficient number, since it is larger than the sum of its proper divisors (5107651796554).

10211111222222 is an equidigital number, since it uses as much as digits as its factorization.

10211111222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698728482.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 10211111222222 its reverse (22222211111201), we get a palindrome (32433322333423).

The spelling of 10211111222222 in words is "ten trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty-two".