210111221220202 has 16 divisors (see below), whose sum is σ = 320617137669120. Its totient is φ = 103254303858048.

The previous prime is 210111221220169. The next prime is 210111221220203. The reversal of 210111221220202 is 202022122111012.

It is a self number, because there is not a number n which added to its sum of digits gives 210111221220202.

It is not an unprimeable number, because it can be changed into a prime (210111221220203) 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 7 ways as a sum of consecutive naturals, for example, 3865437927 + ... + 3865492282.

It is an arithmetic number, because the mean of its divisors is an integer number (20038571104320).

Almost surely, 2^{210111221220202} is an apocalyptic number.

210111221220202 is a deficient number, since it is larger than the sum of its proper divisors (110505916448918).

210111221220202 is a wasteful number, since it uses less digits than its factorization.

210111221220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7730930445.

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

Adding to 210111221220202 its reverse (202022122111012), we get a palindrome (412133343331214).

The spelling of 210111221220202 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty thousand, two hundred two".