1211201101222 has 16 divisors (see below), whose sum is σ = 2076449306400. Its totient is φ = 519060045888.

The previous prime is 1211201101219. The next prime is 1211201101273. The reversal of 1211201101222 is 2221011021121.

It is a junction number, because it is equal to n+sod(n) for n = 1211201101196 and 1211201101205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889103 + ... + 2447674.

It is an arithmetic number, because the mean of its divisors is an integer number (129778081650).

Almost surely, 2^{1211201101222} is an apocalyptic number.

1211201101222 is a deficient number, since it is larger than the sum of its proper divisors (865248205178).

1211201101222 is a wasteful number, since it uses less digits than its factorization.

1211201101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356735.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211201101222 its reverse (2221011021121), we get a palindrome (3432212122343).

The spelling of 1211201101222 in words is "one trillion, two hundred eleven billion, two hundred one million, one hundred one thousand, two hundred twenty-two".