21000011211011 has 8 divisors (see below), whose sum is σ = 24000048636000. Its totient is φ = 17999982741888.

The previous prime is 21000011211007. The next prime is 21000011211029. The reversal of 21000011211011 is 11011211000012.

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

It is not a de Polignac number, because 21000011211011 - 2² = 21000011211007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21000011210983 and 21000011211001.

It is not an unprimeable number, because it can be changed into a prime (21000011211071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3912365 + ... + 7570113.

It is an arithmetic number, because the mean of its divisors is an integer number (3000006079500).

Almost surely, 2^{21000011211011} is an apocalyptic number.

21000011211011 is a deficient number, since it is larger than the sum of its proper divisors (3000037424989).

21000011211011 is an equidigital number, since it uses as much as digits as its factorization.

21000011211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477933.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21000011211011 its reverse (11011211000012), we get a palindrome (32011222211023).

The spelling of 21000011211011 in words is "twenty-one trillion, eleven million, two hundred eleven thousand, eleven".