1211210122222 has 32 divisors (see below), whose sum is σ = 1860569149824. Its totient is φ = 591142156800.

The previous prime is 1211210122201. The next prime is 1211210122247. The reversal of 1211210122222 is 2222210121121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211210122222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27081963 + ... + 27126649.

It is an arithmetic number, because the mean of its divisors is an integer number (58142785932).

Almost surely, 2^{1211210122222} is an apocalyptic number.

1211210122222 is a deficient number, since it is larger than the sum of its proper divisors (649359027602).

1211210122222 is a wasteful number, since it uses less digits than its factorization.

1211210122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46044.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1211210122222 its reverse (2222210121121), we get a palindrome (3433420243343).

The spelling of 1211210122222 in words is "one trillion, two hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, two hundred twenty-two".