1122122101111 has 4 divisors (see below), whose sum is σ = 1224133201224. Its totient is φ = 1020111001000.

The previous prime is 1122122101109. The next prime is 1122122101129. The reversal of 1122122101111 is 1111012212211.

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 1122122101111 - 2¹ = 1122122101109 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 (1122122101151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51005550040 + ... + 51005550061.

It is an arithmetic number, because the mean of its divisors is an integer number (306033300306).

Almost surely, 2^{1122122101111} is an apocalyptic number.

1122122101111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1122122101111 is a deficient number, since it is larger than the sum of its proper divisors (102011100113).

1122122101111 is a wasteful number, since it uses less digits than its factorization.

1122122101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102011100112.

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

Adding to 1122122101111 its reverse (1111012212211), we get a palindrome (2233134313322).

The spelling of 1122122101111 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred one thousand, one hundred eleven".