12012222221021 has 64 divisors (see below), whose sum is σ = 14209006694400. Its totient is φ = 10037105280000.

The previous prime is 12012222220919. The next prime is 12012222221081.

12012222221021 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12012222221021 - 2³⁴ = 11995042351837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012222220984 and 12012222221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012222221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1321326686 + ... + 1321335776.

It is an arithmetic number, because the mean of its divisors is an integer number (222015729600).

Almost surely, 2^{12012222221021} is an apocalyptic number.

12012222221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12012222221021 is a deficient number, since it is larger than the sum of its proper divisors (2196784473379).

12012222221021 is a wasteful number, since it uses less digits than its factorization.

12012222221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10002.

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 1201222 and 2221021, that added together give a palindrome (3422243).

The spelling of 12012222221021 in words is "twelve trillion, twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, twenty-one".