1222200100111 has 4 divisors (see below), whose sum is σ = 1261625909824. Its totient is φ = 1182774290400.

The previous prime is 1222200100039. The next prime is 1222200100139. The reversal of 1222200100111 is 1110010022221.

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 1222200100111 - 2²⁵ = 1222166545679 is a prime.

It is a super-2 number, since 2×1222200100111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222200100091 and 1222200100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222200100171) 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, 19712904810 + ... + 19712904871.

It is an arithmetic number, because the mean of its divisors is an integer number (315406477456).

Almost surely, 2^{1222200100111} is an apocalyptic number.

1222200100111 is a deficient number, since it is larger than the sum of its proper divisors (39425809713).

1222200100111 is an equidigital number, since it uses as much as digits as its factorization.

1222200100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39425809712.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1222200100111 its reverse (1110010022221), we get a palindrome (2332210122332).

The spelling of 1222200100111 in words is "one trillion, two hundred twenty-two billion, two hundred million, one hundred thousand, one hundred eleven".