211121222122 has 4 divisors (see below), whose sum is σ = 316681833186. Its totient is φ = 105560611060.

The previous prime is 211121222083. The next prime is 211121222131. The reversal of 211121222122 is 221222121112.

211121222122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188956265481 + 22164956641 = 434691^2 + 148879^2 .

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 211121222122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780305529 + ... + 52780305532.

Almost surely, 2^211121222122 is an apocalyptic number.

211121222122 is a deficient number, since it is larger than the sum of its proper divisors (105560611064).

211121222122 is a wasteful number, since it uses less digits than its factorization.

211121222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105560611063.

The product of its digits is 128, while the sum is 19.

Adding to 211121222122 its reverse (221222121112), we get a palindrome (432343343234).

The spelling of 211121222122 in words is "two hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".