211121022112110 has 96 divisors (see below), whose sum is σ = 598948513413120. Its totient is φ = 51169527057600.

The previous prime is 211121022112081. The next prime is 211121022112151. The reversal of 211121022112110 is 11211220121112.

It is a happy number.

211121022112110 is a `hidden beast` number, since 2 + 111 + 210 + 221 + 12 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19121406 + ... + 28069025.

It is an arithmetic number, because the mean of its divisors is an integer number (6239047014720).

Almost surely, 2^{211121022112110} is an apocalyptic number.

211121022112110 is an abundant number, since it is smaller than the sum of its proper divisors (387827491301010).

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

211121022112110 is a wasteful number, since it uses less digits than its factorization.

211121022112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47194974 (or 47194971 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211121022112110 its reverse (11211220121112), we get a palindrome (222332242233222).

The spelling of 211121022112110 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty-two million, one hundred twelve thousand, one hundred ten".