1210222100111 has 4 divisors (see below), whose sum is σ = 1210228993152. Its totient is φ = 1210215207072.

The previous prime is 1210222099991. The next prime is 1210222100147. The reversal of 1210222100111 is 1110012220121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210222100111 - 2³⁸ = 935344193167 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 (1210222100411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3176090 + ... + 3536663.

It is an arithmetic number, because the mean of its divisors is an integer number (302557248288).

Almost surely, 2^{1210222100111} is an apocalyptic number.

1210222100111 is a deficient number, since it is larger than the sum of its proper divisors (6893041).

1210222100111 is an equidigital number, since it uses as much as digits as its factorization.

1210222100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893040.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210222100111 its reverse (1110012220121), we get a palindrome (2320234320232).

The spelling of 1210222100111 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, one hundred thousand, one hundred eleven".