211021111122011 has 8 divisors (see below), whose sum is σ = 211356742700544. Its totient is φ = 210685483368360.

The previous prime is 211021111122007. The next prime is 211021111122137. The reversal of 211021111122011 is 110221111120112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211021111122011 - 2² = 211021111122007 is a prime.

It is a super-2 number, since 2×211021111122011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211021111121011) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 122039456 + ... + 123756498.

It is an arithmetic number, because the mean of its divisors is an integer number (26419592837568).

Almost surely, 2^{211021111122011} is an apocalyptic number.

211021111122011 is a deficient number, since it is larger than the sum of its proper divisors (335631578533).

211021111122011 is a wasteful number, since it uses less digits than its factorization.

211021111122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912441.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211021111122011 its reverse (110221111120112), we get a palindrome (321242222242123).

The spelling of 211021111122011 in words is "two hundred eleven trillion, twenty-one billion, one hundred eleven million, one hundred twenty-two thousand, eleven".