1222002221111 has 6 divisors (see below), whose sum is σ = 1421512787880. Its totient is φ = 1047430475196.

The previous prime is 1222002221051. The next prime is 1222002221137. The reversal of 1222002221111 is 1111222002221.

It is a de Polignac number, because none of the positive numbers 2^k-1222002221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222002221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222002221611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12469410371 + ... + 12469410468.

It is an arithmetic number, because the mean of its divisors is an integer number (236918797980).

Almost surely, 2^{1222002221111} is an apocalyptic number.

1222002221111 is a deficient number, since it is larger than the sum of its proper divisors (199510566769).

1222002221111 is an equidigital number, since it uses as much as digits as its factorization.

1222002221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24938820853 (or 24938820846 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222002221111 its reverse (1111222002221), we get a palindrome (2333224223332).

It can be divided in two parts, 1222002221 and 111, that multiplied together give a palindrome (135642246531).

The spelling of 1222002221111 in words is "one trillion, two hundred twenty-two billion, two million, two hundred twenty-one thousand, one hundred eleven".