211220202011 has 8 divisors (see below), whose sum is σ = 259963325664. Its totient is φ = 167119280640.

The previous prime is 211220202001. The next prime is 211220202031. The reversal of 211220202011 is 110202022112.

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

It is not a de Polignac number, because 211220202011 - 2¹⁰ = 211220200987 is a prime.

It is a super-2 number, since 2×211220202011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211220202001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1160550470 + ... + 1160550651.

It is an arithmetic number, because the mean of its divisors is an integer number (32495415708).

Almost surely, 2^211220202011 is an apocalyptic number.

211220202011 is a deficient number, since it is larger than the sum of its proper divisors (48743123653).

211220202011 is a wasteful number, since it uses less digits than its factorization.

211220202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321101141.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211220202011 its reverse (110202022112), we get a palindrome (321422224123).

The spelling of 211220202011 in words is "two hundred eleven billion, two hundred twenty million, two hundred two thousand, eleven".