12022121111 has 32 divisors (see below), whose sum is σ = 16214274048. Its totient is φ = 8608343040.

The previous prime is 12022121107. The next prime is 12022121197. The reversal of 12022121111 is 11112122021.

It is not a de Polignac number, because 12022121111 - 2² = 12022121107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022121411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196295 + ... + 250151.

It is an arithmetic number, because the mean of its divisors is an integer number (506696064).

Almost surely, 2^12022121111 is an apocalyptic number.

12022121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12022121111 is a deficient number, since it is larger than the sum of its proper divisors (4192152937).

12022121111 is a wasteful number, since it uses less digits than its factorization.

12022121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54111.

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

Adding to 12022121111 its reverse (11112122021), we get a palindrome (23134243132).

The spelling of 12022121111 in words is "twelve billion, twenty-two million, one hundred twenty-one thousand, one hundred eleven".