211123331122 has 16 divisors (see below), whose sum is σ = 345619238400. Its totient is φ = 95924957040.

The previous prime is 211123331077. The next prime is 211123331131. The reversal of 211123331122 is 221133321112.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 211123331093 and 211123331102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955922 + ... + 2061037.

It is an arithmetic number, because the mean of its divisors is an integer number (21601202400).

Almost surely, 2^211123331122 is an apocalyptic number.

211123331122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211123331122 is a deficient number, since it is larger than the sum of its proper divisors (134495907278).

211123331122 is a wasteful number, since it uses less digits than its factorization.

211123331122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019361.

The product of its digits is 432, while the sum is 22.

Adding to 211123331122 its reverse (221133321112), we get a palindrome (432256652234).

It can be divided in two parts, 211123 and 331122, that added together give a palindrome (542245).

The spelling of 211123331122 in words is "two hundred eleven billion, one hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-two".