12042021111 has 16 divisors (see below), whose sum is σ = 17004492000. Its totient is φ = 7554003968.

The previous prime is 12042021107. The next prime is 12042021139. The reversal of 12042021111 is 11112024021.

It is a cyclic number.

It is not a de Polignac number, because 12042021111 - 2² = 12042021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042021311) 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 15 ways as a sum of consecutive naturals, for example, 211705 + ... + 262493.

It is an arithmetic number, because the mean of its divisors is an integer number (1062780750).

Almost surely, 2^12042021111 is an apocalyptic number.

12042021111 is a deficient number, since it is larger than the sum of its proper divisors (4962470889).

12042021111 is a wasteful number, since it uses less digits than its factorization.

12042021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55458.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12042021111 its reverse (11112024021), we get a palindrome (23154045132).

The spelling of 12042021111 in words is "twelve billion, forty-two million, twenty-one thousand, one hundred eleven".