211222020011 has 4 divisors (see below), whose sum is σ = 211230217872. Its totient is φ = 211213822152.

The previous prime is 211222020007. The next prime is 211222020013. The reversal of 211222020011 is 110020222112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211222020011 - 2² = 211222020007 is a prime.

It is a super-2 number, since 2×211222020011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211222020013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4060160 + ... + 4111853.

It is an arithmetic number, because the mean of its divisors is an integer number (52807554468).

Almost surely, 2^211222020011 is an apocalyptic number.

211222020011 is a deficient number, since it is larger than the sum of its proper divisors (8197861).

211222020011 is an equidigital number, since it uses as much as digits as its factorization.

211222020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8197860.

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

Adding to 211222020011 its reverse (110020222112), we get a palindrome (321242242123).

It can be divided in two parts, 211 and 222020011, that added together give a palindrome (222020222).

The spelling of 211222020011 in words is "two hundred eleven billion, two hundred twenty-two million, twenty thousand, eleven".