211222101101011 has 16 divisors (see below), whose sum is σ = 283598904976128. Its totient is φ = 151927984807200.

The previous prime is 211222101100991. The next prime is 211222101101023. The reversal of 211222101101011 is 110101101222112.

It is a de Polignac number, because none of the positive numbers 2^k-211222101101011 is a prime.

It is a super-2 number, since 2×211222101101011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222101101111) 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, 105505544005 + ... + 105505546006.

It is an arithmetic number, because the mean of its divisors is an integer number (17724931561008).

Almost surely, 2^{211222101101011} is an apocalyptic number.

211222101101011 is a deficient number, since it is larger than the sum of its proper divisors (72376803875117).

211222101101011 is a wasteful number, since it uses less digits than its factorization.

211222101101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211011090042.

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

Adding to 211222101101011 its reverse (110101101222112), we get a palindrome (321323202323123).

It can be divided in two parts, 211222101 and 101011, that added together give a palindrome (211323112).

The spelling of 211222101101011 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred one million, one hundred one thousand, eleven".