211211112122 has 48 divisors (see below), whose sum is σ = 344362194720. Its totient is φ = 97106833152.

The previous prime is 211211112059. The next prime is 211211112149. The reversal of 211211112122 is 221211112112.

It is a super-2 number, since 2×211211112122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 211211112122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5539628 + ... + 5577624.

It is an arithmetic number, because the mean of its divisors is an integer number (7174212390).

Almost surely, 2^211211112122 is an apocalyptic number.

211211112122 is a deficient number, since it is larger than the sum of its proper divisors (133151082598).

211211112122 is a wasteful number, since it uses less digits than its factorization.

211211112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38255 (or 38238 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 211211112122 its reverse (221211112112), we get a palindrome (432422224234).

The spelling of 211211112122 in words is "two hundred eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-two".