211122011021 has 16 divisors (see below), whose sum is σ = 217297987200. Its totient is φ = 205049423040.

The previous prime is 211122011017. The next prime is 211122011047. The reversal of 211122011021 is 120110221112.

It is a cyclic number.

It is not a de Polignac number, because 211122011021 - 2² = 211122011017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211122010987 and 211122011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122017021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2005331 + ... + 2107983.

It is an arithmetic number, because the mean of its divisors is an integer number (13581124200).

Almost surely, 2^211122011021 is an apocalyptic number.

It is an amenable number.

211122011021 is a deficient number, since it is larger than the sum of its proper divisors (6175976179).

211122011021 is a wasteful number, since it uses less digits than its factorization.

211122011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103156.

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

Adding to 211122011021 its reverse (120110221112), we get a palindrome (331232232133).

The spelling of 211122011021 in words is "two hundred eleven billion, one hundred twenty-two million, eleven thousand, twenty-one".