211200221121222 has 16 divisors (see below), whose sum is σ = 422403111300672. Its totient is φ = 70399628864040.

The previous prime is 211200221121121. The next prime is 211200221121251. The reversal of 211200221121222 is 222121122002112.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 110181348 + ... + 112081799.

It is an arithmetic number, because the mean of its divisors is an integer number (26400194456292).

Almost surely, 2^{211200221121222} is an apocalyptic number.

211200221121222 is an abundant number, since it is smaller than the sum of its proper divisors (211202890179450).

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

211200221121222 is a wasteful number, since it uses less digits than its factorization.

211200221121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222421523.

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

Adding to 211200221121222 its reverse (222121122002112), we get a palindrome (433321343123334).

The spelling of 211200221121222 in words is "two hundred eleven trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".