12210211221022 has 4 divisors (see below), whose sum is σ = 18315316831536. Its totient is φ = 6105105610510.

The previous prime is 12210211221001. The next prime is 12210211221023. The reversal of 12210211221022 is 22012211201221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210211221023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052552805254 + ... + 3052552805257.

It is an arithmetic number, because the mean of its divisors is an integer number (4578829207884).

Almost surely, 2^{12210211221022} is an apocalyptic number.

12210211221022 is a deficient number, since it is larger than the sum of its proper divisors (6105105610514).

12210211221022 is an equidigital number, since it uses as much as digits as its factorization.

12210211221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105105610513.

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

Adding to 12210211221022 its reverse (22012211201221), we get a palindrome (34222422422243).

The spelling of 12210211221022 in words is "twelve trillion, two hundred ten billion, two hundred eleven million, two hundred twenty-one thousand, twenty-two".