211122111020 has 12 divisors (see below), whose sum is σ = 443356433184. Its totient is φ = 84448844400.

The previous prime is 211122110977. The next prime is 211122111041. The reversal of 211122111020 is 20111221112.

211122111020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211122110986 and 211122111004.

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 3 ways as a sum of consecutive naturals, for example, 5278052756 + ... + 5278052795.

It is an arithmetic number, because the mean of its divisors is an integer number (36946369432).

Almost surely, 2^211122111020 is an apocalyptic number.

211122111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211122111020 is an abundant number, since it is smaller than the sum of its proper divisors (232234322164).

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

211122111020 is a wasteful number, since it uses less digits than its factorization.

211122111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556105560 (or 10556105558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211122111020 its reverse (20111221112), we get a palindrome (231233332132).

The spelling of 211122111020 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, twenty".