211120220202123 has 16 divisors (see below), whose sum is σ = 281515192834176. Its totient is φ = 140736031044480.

The previous prime is 211120220201999. The next prime is 211120220202137. The reversal of 211120220202123 is 321202022021112.

It is not a de Polignac number, because 211120220202123 - 2⁸ = 211120220201867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211120220202123.

It is not an unprimeable number, because it can be changed into a prime (211120220202623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3234683536 + ... + 3234748802.

It is an arithmetic number, because the mean of its divisors is an integer number (17594699552136).

Almost surely, 2^{211120220202123} is an apocalyptic number.

211120220202123 is a deficient number, since it is larger than the sum of its proper divisors (70394972632053).

211120220202123 is a wasteful number, since it uses less digits than its factorization.

211120220202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131354.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211120220202123 its reverse (321202022021112), we get a palindrome (532322242223235).

The spelling of 211120220202123 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred twenty million, two hundred two thousand, one hundred twenty-three".