12021201022111 has 16 divisors (see below), whose sum is σ = 12295823016960. Its totient is φ = 11747372871520.

The previous prime is 12021201022097. The next prime is 12021201022157. The reversal of 12021201022111 is 11122010212021.

It is a cyclic number.

It is not a de Polignac number, because 12021201022111 - 2³⁵ = 11986841283743 is a prime.

It is a super-2 number, since 2×12021201022111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021201022811) 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, 139266876 + ... + 139353166.

It is an arithmetic number, because the mean of its divisors is an integer number (768488938560).

Almost surely, 2^{12021201022111} is an apocalyptic number.

12021201022111 is a deficient number, since it is larger than the sum of its proper divisors (274621994849).

12021201022111 is an equidigital number, since it uses as much as digits as its factorization.

12021201022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90854.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12021201022111 its reverse (11122010212021), we get a palindrome (23143211234132).

The spelling of 12021201022111 in words is "twelve trillion, twenty-one billion, two hundred one million, twenty-two thousand, one hundred eleven".