12021010111 has 6 divisors (see below), whose sum is σ = 13213176536. Its totient is φ = 10928190900.

The previous prime is 12021010103. The next prime is 12021010163. The reversal of 12021010111 is 11101012021.

12021010111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12021010111 - 2³ = 12021010103 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 (12021010171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49673475 + ... + 49673716.

Almost surely, 2^12021010111 is an apocalyptic number.

12021010111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12021010111 is a deficient number, since it is larger than the sum of its proper divisors (1192166425).

12021010111 is an equidigital number, since it uses as much as digits as its factorization.

12021010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99347213 (or 99347202 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12021010111 its reverse (11101012021), we get a palindrome (23122022132).

It can be divided in two parts, 120210 and 10111, that added together give a 4-th power (130321 = 19⁴).

The spelling of 12021010111 in words is "twelve billion, twenty-one million, ten thousand, one hundred eleven".