1211210012222 has 48 divisors (see below), whose sum is σ = 2149573749120. Its totient is φ = 510217111152.

The previous prime is 1211210012219. The next prime is 1211210012261. The reversal of 1211210012222 is 2222100121121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211210012222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59237933 + ... + 59258375.

It is an arithmetic number, because the mean of its divisors is an integer number (44782786440).

Almost surely, 2^{1211210012222} is an apocalyptic number.

1211210012222 is a deficient number, since it is larger than the sum of its proper divisors (938363736898).

1211210012222 is a wasteful number, since it uses less digits than its factorization.

1211210012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30765 (or 30758 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1211210012222 its reverse (2222100121121), we get a palindrome (3433310133343).

The spelling of 1211210012222 in words is "one trillion, two hundred eleven billion, two hundred ten million, twelve thousand, two hundred twenty-two".