211122220011 has 8 divisors (see below), whose sum is σ = 293735262720. Its totient is φ = 134628661992.

The previous prime is 211122220007. The next prime is 211122220013. The reversal of 211122220011 is 110022221112.

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

It is not a de Polignac number, because 211122220011 - 2² = 211122220007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211122220013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529871091 + ... + 1529871228.

It is an arithmetic number, because the mean of its divisors is an integer number (36716907840).

Almost surely, 2^211122220011 is an apocalyptic number.

211122220011 is a deficient number, since it is larger than the sum of its proper divisors (82613042709).

211122220011 is a wasteful number, since it uses less digits than its factorization.

211122220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059742345.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211122220011 its reverse (110022221112), we get a palindrome (321144441123).

The spelling of 211122220011 in words is "two hundred eleven billion, one hundred twenty-two million, two hundred twenty thousand, eleven".