211001120122 has 12 divisors (see below), whose sum is σ = 342720754830. Its totient is φ = 97385132208.

The previous prime is 211001120117. The next prime is 211001120123. The reversal of 211001120122 is 221021100112.

It can be written as a sum of positive squares in 3 ways, for example, as 115988606041 + 95012514081 = 340571^2 + 308241^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (211001120123) 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 5 ways as a sum of consecutive naturals, for example, 312131497 + ... + 312132172.

Almost surely, 2^211001120122 is an apocalyptic number.

211001120122 is a deficient number, since it is larger than the sum of its proper divisors (131719634708).

211001120122 is a wasteful number, since it uses less digits than its factorization.

211001120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624263697 (or 624263684 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211001120122 its reverse (221021100112), we get a palindrome (432022220234).

The spelling of 211001120122 in words is "two hundred eleven billion, one million, one hundred twenty thousand, one hundred twenty-two".