210121220222 has 32 divisors (see below), whose sum is σ = 327288474720. Its totient is φ = 101053008000.

The previous prime is 210121220207. The next prime is 210121220269. The reversal of 210121220222 is 222022121012.

It is a happy number.

210121220222 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 210121220222.

It is a congruent number.

It is an unprimeable number.

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, 41384348 + ... + 41389424.

It is an arithmetic number, because the mean of its divisors is an integer number (10227764835).

Almost surely, 2^210121220222 is an apocalyptic number.

210121220222 is a deficient number, since it is larger than the sum of its proper divisors (117167254498).

210121220222 is a wasteful number, since it uses less digits than its factorization.

210121220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7676.

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

Adding to 210121220222 its reverse (222022121012), we get a palindrome (432143341234).

The spelling of 210121220222 in words is "two hundred ten billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".