1210122220111 has 12 divisors (see below), whose sum is σ = 1407726250320. Its totient is φ = 1037223260640.

The previous prime is 1210122220033. The next prime is 1210122220117. The reversal of 1210122220111 is 1110222210121.

It is not a de Polignac number, because 1210122220111 - 2¹³ = 1210122211919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210122220117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2000851 + ... + 2534491.

It is an arithmetic number, because the mean of its divisors is an integer number (117310520860).

Almost surely, 2^{1210122220111} is an apocalyptic number.

1210122220111 is a deficient number, since it is larger than the sum of its proper divisors (197604030209).

1210122220111 is an equidigital number, since it uses as much as digits as its factorization.

1210122220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579934 (or 579927 counting only the distinct ones).

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

Adding to 1210122220111 its reverse (1110222210121), we get a palindrome (2320344430232).

The spelling of 1210122220111 in words is "one trillion, two hundred ten billion, one hundred twenty-two million, two hundred twenty thousand, one hundred eleven".