12212102021018 has 16 divisors (see below), whose sum is σ = 19353001006080. Its totient is φ = 5770061408496.

The previous prime is 12212102021011. The next prime is 12212102021059. The reversal of 12212102021018 is 81012020121221.

12212102021018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12212102021018² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12212102020984 and 12212102021002.

It is not an unprimeable number, because it can be changed into a prime (12212102021011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239927946 + ... + 2239933397.

It is an arithmetic number, because the mean of its divisors is an integer number (1209562562880).

Almost surely, 2^{12212102021018} is an apocalyptic number.

12212102021018 is a deficient number, since it is larger than the sum of its proper divisors (7140898985062).

12212102021018 is a wasteful number, since it uses less digits than its factorization.

12212102021018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4479861421.

The product of its (nonzero) digits is 256, while the sum is 23.

Adding to 12212102021018 its reverse (81012020121221), we get a palindrome (93224122142239).

The spelling of 12212102021018 in words is "twelve trillion, two hundred twelve billion, one hundred two million, twenty-one thousand, eighteen".