210220121222 has 4 divisors (see below), whose sum is σ = 315330181836. Its totient is φ = 105110060610.

The previous prime is 210220121219. The next prime is 210220121227. The reversal of 210220121222 is 222121022012.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210220121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210220121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52555030304 + ... + 52555030307.

It is an arithmetic number, because the mean of its divisors is an integer number (78832545459).

Almost surely, 2^210220121222 is an apocalyptic number.

210220121222 is a deficient number, since it is larger than the sum of its proper divisors (105110060614).

210220121222 is a wasteful number, since it uses less digits than its factorization.

210220121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105110060613.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210220121222 its reverse (222121022012), we get a palindrome (432341143234).

The spelling of 210220121222 in words is "two hundred ten billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".