1211000122222 has 16 divisors (see below), whose sum is σ = 2085933225600. Its totient is φ = 521483306040.

The previous prime is 1211000122217. The next prime is 1211000122243. The reversal of 1211000122222 is 2222210001121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211000122196 and 1211000122205.

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, 1448564322 + ... + 1448565157.

It is an arithmetic number, because the mean of its divisors is an integer number (130370826600).

Almost surely, 2^{1211000122222} is an apocalyptic number.

1211000122222 is a deficient number, since it is larger than the sum of its proper divisors (874933103378).

1211000122222 is a wasteful number, since it uses less digits than its factorization.

1211000122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897129511.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1211000122222 its reverse (2222210001121), we get a palindrome (3433210123343).

The spelling of 1211000122222 in words is "one trillion, two hundred eleven billion, one hundred twenty-two thousand, two hundred twenty-two".