211120200001121 has 4 divisors (see below), whose sum is σ = 211139095581972. Its totient is φ = 211101304420272.

The previous prime is 211120200001103. The next prime is 211120200001127. The reversal of 211120200001121 is 121100002021112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75600590419600 + 135519609581521 = 8694860^2 + 11641289^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120200001121 - 2¹⁸ = 211120199738977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211120200001096 and 211120200001105.

It is not an unprimeable number, because it can be changed into a prime (211120200001127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9447773666 + ... + 9447796011.

It is an arithmetic number, because the mean of its divisors is an integer number (52784773895493).

Almost surely, 2^{211120200001121} is an apocalyptic number.

It is an amenable number.

211120200001121 is a deficient number, since it is larger than the sum of its proper divisors (18895580851).

211120200001121 is a wasteful number, since it uses less digits than its factorization.

211120200001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18895580850.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211120200001121 its reverse (121100002021112), we get a palindrome (332220202022233).

The spelling of 211120200001121 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred million, one thousand, one hundred twenty-one".