12021111112021 has 16 divisors (see below), whose sum is σ = 13140878541120. Its totient is φ = 10905837390720.

The previous prime is 12021111111973. The next prime is 12021111112039.

12021111112021 is nontrivially palindromic in base 10.

12021111112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12021111112021 - 2⁹ = 12021111111509 is a prime.

It is a super-2 number, since 2×12021111112021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12021111111986 and 12021111112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021111112421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66666841 + ... + 66846913.

It is an arithmetic number, because the mean of its divisors is an integer number (821304908820).

Almost surely, 2^{12021111112021} is an apocalyptic number.

12021111112021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021111112021 is a deficient number, since it is larger than the sum of its proper divisors (1119767429099).

12021111112021 is a wasteful number, since it uses less digits than its factorization.

12021111112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192516.

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

It can be divided in two parts, 1202111 and 1112021, that added together give a palindrome (2314132).

The spelling of 12021111112021 in words is "twelve trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, twenty-one".