211121212222002 has 16 divisors (see below), whose sum is σ = 425324485937952. Its totient is φ = 69860060491680.

The previous prime is 211121212221961. The next prime is 211121212222007. The reversal of 211121212222002 is 200222212121112.

It is a self number, because there is not a number n which added to its sum of digits gives 211121212222002.

It is not an unprimeable number, because it can be changed into a prime (211121212222007) 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, 128419228024 + ... + 128419229667.

It is an arithmetic number, because the mean of its divisors is an integer number (26582780371122).

Almost surely, 2^{211121212222002} is an apocalyptic number.

211121212222002 is an abundant number, since it is smaller than the sum of its proper divisors (214203273715950).

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

211121212222002 is a wasteful number, since it uses less digits than its factorization.

211121212222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256838457833.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211121212222002 its reverse (200222212121112), we get a palindrome (411343424343114).

The spelling of 211121212222002 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, two".