211122100220011 has 4 divisors (see below), whose sum is σ = 211122146996800. Its totient is φ = 211122053443224.

The previous prime is 211122100219999. The next prime is 211122100220047. The reversal of 211122100220011 is 110022001221112.

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 211122100220011 - 2⁴⁷ = 70384611864683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211122100220051) 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, 15796956 + ... + 25918873.

It is an arithmetic number, because the mean of its divisors is an integer number (52780536749200).

Almost surely, 2^{211122100220011} is an apocalyptic number.

211122100220011 is a deficient number, since it is larger than the sum of its proper divisors (46776789).

211122100220011 is an equidigital number, since it uses as much as digits as its factorization.

211122100220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46776788.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211122100220011 its reverse (110022001221112), we get a palindrome (321144101441123).

The spelling of 211122100220011 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred million, two hundred twenty thousand, eleven".