12102222212021 has 4 divisors (see below), whose sum is σ = 12102269923200. Its totient is φ = 12102174500844.

The previous prime is 12102222211979. The next prime is 12102222212057. The reversal of 12102222212021 is 12021222220121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12102222212021 - 2⁶ = 12102222211957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12102222211984 and 12102222212002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102222212921) 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 3 ways as a sum of consecutive naturals, for example, 23473061 + ... + 23983098.

It is an arithmetic number, because the mean of its divisors is an integer number (3025567480800).

Almost surely, 2^{12102222212021} is an apocalyptic number.

It is an amenable number.

12102222212021 is a deficient number, since it is larger than the sum of its proper divisors (47711179).

12102222212021 is an equidigital number, since it uses as much as digits as its factorization.

12102222212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47711178.

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

Adding to 12102222212021 its reverse (12021222220121), we get a palindrome (24123444432142).

It can be divided in two parts, 1210222 and 2212021, that added together give a palindrome (3422243).

The spelling of 12102222212021 in words is "twelve trillion, one hundred two billion, two hundred twenty-two million, two hundred twelve thousand, twenty-one".