211101200121122 has 4 divisors (see below), whose sum is σ = 316651800181686. Its totient is φ = 105550600060560.

The previous prime is 211101200121113. The next prime is 211101200121137. The reversal of 211101200121122 is 221121002101112.

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., 208308862202281 + 2792337918841 = 14432909^2 + 1671029^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211101200121122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775300030279 + ... + 52775300030282.

Almost surely, 2^{211101200121122} is an apocalyptic number.

211101200121122 is a deficient number, since it is larger than the sum of its proper divisors (105550600060564).

211101200121122 is a wasteful number, since it uses less digits than its factorization.

211101200121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105550600060563.

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

Adding to 211101200121122 its reverse (221121002101112), we get a palindrome (432222202222234).

The spelling of 211101200121122 in words is "two hundred eleven trillion, one hundred one billion, two hundred million, one hundred twenty-one thousand, one hundred twenty-two".