12212101111021 has 16 divisors (see below), whose sum is σ = 13966493739264. Its totient is φ = 10460161857024.

The previous prime is 12212101110997. The next prime is 12212101111031. The reversal of 12212101111021 is 12011110121221.

It is a cyclic number.

It is not a de Polignac number, because 12212101111021 - 2²³ = 12212092722413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212101110986 and 12212101111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212101111031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93005211 + ... + 93136423.

It is an arithmetic number, because the mean of its divisors is an integer number (872905858704).

Almost surely, 2^{12212101111021} is an apocalyptic number.

It is an amenable number.

12212101111021 is a deficient number, since it is larger than the sum of its proper divisors (1754392628243).

12212101111021 is a wasteful number, since it uses less digits than its factorization.

12212101111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140460.

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

Adding to 12212101111021 its reverse (12011110121221), we get a palindrome (24223211232242).

The spelling of 12212101111021 in words is "twelve trillion, two hundred twelve billion, one hundred one million, one hundred eleven thousand, twenty-one".