12222221011021 has 8 divisors (see below), whose sum is σ = 14000070930560. Its totient is φ = 10452325678128.

The previous prime is 12222221011001. The next prime is 12222221011027. The reversal of 12222221011021 is 12011012222221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12222221011021 - 2¹⁷ = 12222220879949 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 12222221011021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222221011027) 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, 1988643366 + ... + 1988649511.

It is an arithmetic number, because the mean of its divisors is an integer number (1750008866320).

Almost surely, 2^{12222221011021} is an apocalyptic number.

It is an amenable number.

12222221011021 is a deficient number, since it is larger than the sum of its proper divisors (1777849919539).

12222221011021 is an equidigital number, since it uses as much as digits as its factorization.

12222221011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977293323.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12222221011021 its reverse (12011012222221), we get a palindrome (24233233233242).

The spelling of 12222221011021 in words is "twelve trillion, two hundred twenty-two billion, two hundred twenty-one million, eleven thousand, twenty-one".