1222101011111 has 4 divisors (see below), whose sum is σ = 1234201021224. Its totient is φ = 1210001001000.

The previous prime is 1222101011099. The next prime is 1222101011147. The reversal of 1222101011111 is 1111101012221.

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 1222101011111 - 2¹⁴ = 1222100994727 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 (1222101011161) 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, 6050004905 + ... + 6050005106.

It is an arithmetic number, because the mean of its divisors is an integer number (308550255306).

Almost surely, 2^{1222101011111} is an apocalyptic number.

1222101011111 is a deficient number, since it is larger than the sum of its proper divisors (12100010113).

1222101011111 is a wasteful number, since it uses less digits than its factorization.

1222101011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100010112.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1222101011111 its reverse (1111101012221), we get a palindrome (2333202023332).

The spelling of 1222101011111 in words is "one trillion, two hundred twenty-two billion, one hundred one million, eleven thousand, one hundred eleven".