12011020220111 has 12 divisors (see below), whose sum is σ = 13919030670840. Its totient is φ = 10276808741760.

The previous prime is 12011020220093. The next prime is 12011020220137. The reversal of 12011020220111 is 11102202011021.

It is not a de Polignac number, because 12011020220111 - 2³⁰ = 12009946478287 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 (12011020220161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1889116076 + ... + 1889122433.

It is an arithmetic number, because the mean of its divisors is an integer number (1159919222570).

Almost surely, 2^{12011020220111} is an apocalyptic number.

12011020220111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12011020220111 is a deficient number, since it is larger than the sum of its proper divisors (1908010450729).

12011020220111 is a wasteful number, since it uses less digits than its factorization.

12011020220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778238554 (or 3778238537 counting only the distinct ones).

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

Adding to 12011020220111 its reverse (11102202011021), we get a palindrome (23113222231132).

The spelling of 12011020220111 in words is "twelve trillion, eleven billion, twenty million, two hundred twenty thousand, one hundred eleven".