211122212021998 has 16 divisors (see below), whose sum is σ = 317345927760000. Its totient is φ = 105340238152192.

The previous prime is 211122212021957. The next prime is 211122212022041. The reversal of 211122212021998 is 899120212221112.

It is a super-2 number, since 2×211122212021998² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 293909178 + ... + 294626626.

It is an arithmetic number, because the mean of its divisors is an integer number (19834120485000).

Almost surely, 2^{211122212021998} is an apocalyptic number.

211122212021998 is a deficient number, since it is larger than the sum of its proper divisors (106223715738002).

211122212021998 is a wasteful number, since it uses less digits than its factorization.

211122212021998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025099.

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 211122212021998 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, nine hundred ninety-eight".