211211222222202 has 16 divisors (see below), whose sum is σ = 444655204678560. Its totient is φ = 66698280701712.

The previous prime is 211211222222173. The next prime is 211211222222251. The reversal of 211211222222202 is 202222222112112.

It is a happy number.

It is a super-2 number, since 2×211211222222202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

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, 926365009633 + ... + 926365009860.

It is an arithmetic number, because the mean of its divisors is an integer number (27790950292410).

Almost surely, 2^{211211222222202} is an apocalyptic number.

211211222222202 is an abundant number, since it is smaller than the sum of its proper divisors (233443982456358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211211222222202 is a wasteful number, since it uses less digits than its factorization.

211211222222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852730019517.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 211211222222202 its reverse (202222222112112), we get a palindrome (413433444334314).

The spelling of 211211222222202 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred two".