12021222002111 has 4 divisors (see below), whose sum is σ = 13738539430992. Its totient is φ = 10303904573232.

The previous prime is 12021222002107. The next prime is 12021222002143. The reversal of 12021222002111 is 11120022212021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12021222002111 - 2² = 12021222002107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021222002111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021222002161) 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, 858658714430 + ... + 858658714443.

It is an arithmetic number, because the mean of its divisors is an integer number (3434634857748).

Almost surely, 2^{12021222002111} is an apocalyptic number.

12021222002111 is a deficient number, since it is larger than the sum of its proper divisors (1717317428881).

12021222002111 is an equidigital number, since it uses as much as digits as its factorization.

12021222002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717317428880.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12021222002111 its reverse (11120022212021), we get a palindrome (23141244214132).

The spelling of 12021222002111 in words is "twelve trillion, twenty-one billion, two hundred twenty-two million, two thousand, one hundred eleven".