211122012121110 has 48 divisors (see below), whose sum is σ = 548996225403600. Its totient is φ = 56291101295040.

The previous prime is 211122012121103. The next prime is 211122012121117. The reversal of 211122012121110 is 11121210221112.

It is a happy number.

211122012121110 is a `hidden beast` number, since 2 + 111 + 220 + 121 + 211 + 1 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (211122012121103) and next prime (211122012121117).

It is a super-2 number, since 2×211122012121110² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122012121117) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 168161476 + ... + 169412295.

It is an arithmetic number, because the mean of its divisors is an integer number (11437421362575).

Almost surely, 2^{211122012121110} is an apocalyptic number.

211122012121110 is an abundant number, since it is smaller than the sum of its proper divisors (337874213282490).

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

211122012121110 is a wasteful number, since it uses less digits than its factorization.

211122012121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337580733 (or 337580730 counting only the distinct ones).

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

Adding to 211122012121110 its reverse (11121210221112), we get a palindrome (222243222342222).

The spelling of 211122012121110 in words is "two hundred eleven trillion, one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, one hundred ten".