12111021202021 has 12 divisors (see below), whose sum is σ = 14302059236256. Its totient is φ = 10046008364760.

The previous prime is 12111021202019. The next prime is 12111021202031. The reversal of 12111021202021 is 12020212011121.

12111021202021 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 12111021202021 - 2¹ = 12111021202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111021201986 and 12111021202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111021202031) 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, 900173235 + ... + 900186688.

It is an arithmetic number, because the mean of its divisors is an integer number (1191838269688).

Almost surely, 2^{12111021202021} is an apocalyptic number.

It is an amenable number.

12111021202021 is a deficient number, since it is larger than the sum of its proper divisors (2191038034235).

12111021202021 is an equidigital number, since it uses as much as digits as its factorization.

12111021202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800359992 (or 1800359961 counting only the distinct ones).

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

Adding to 12111021202021 its reverse (12020212011121), we get a palindrome (24131233213142).

The spelling of 12111021202021 in words is "twelve trillion, one hundred eleven billion, twenty-one million, two hundred two thousand, twenty-one".