12111022002021 has 4 divisors (see below), whose sum is σ = 16148029336032. Its totient is φ = 8074014668012.

The previous prime is 12111022001993. The next prime is 12111022002029. The reversal of 12111022002021 is 12020022011121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12111022002021 - 2⁹ = 12111022001509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111022002029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018503667001 + ... + 2018503667006.

It is an arithmetic number, because the mean of its divisors is an integer number (4037007334008).

Almost surely, 2^{12111022002021} is an apocalyptic number.

It is an amenable number.

12111022002021 is a deficient number, since it is larger than the sum of its proper divisors (4037007334011).

12111022002021 is an equidigital number, since it uses as much as digits as its factorization.

12111022002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037007334010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12111022002021 its reverse (12020022011121), we get a palindrome (24131044013142).

It can be divided in two parts, 1211102 and 2002021, that added together give a palindrome (3213123).

The spelling of 12111022002021 in words is "twelve trillion, one hundred eleven billion, twenty-two million, two thousand, twenty-one".