12212210110021 has 16 divisors (see below), whose sum is σ = 12689563731840. Its totient is φ = 11738610856000.

The previous prime is 12212210110007. The next prime is 12212210110073. The reversal of 12212210110021 is 12001101221221.

It is a cyclic number.

It is not a de Polignac number, because 12212210110021 - 2⁵ = 12212210109989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12212210109977 and 12212210110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212210114021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274403271 + ... + 274447771.

It is an arithmetic number, because the mean of its divisors is an integer number (793097733240).

Almost surely, 2^{12212210110021} is an apocalyptic number.

It is an amenable number.

12212210110021 is a deficient number, since it is larger than the sum of its proper divisors (477353621819).

12212210110021 is a wasteful number, since it uses less digits than its factorization.

12212210110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86444.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12212210110021 its reverse (12001101221221), we get a palindrome (24213311331242).

The spelling of 12212210110021 in words is "twelve trillion, two hundred twelve billion, two hundred ten million, one hundred ten thousand, twenty-one".