21221110010011 has 8 divisors (see below), whose sum is σ = 22410559342080. Its totient is φ = 20053893375912.

The previous prime is 21221110010003. The next prime is 21221110010033. The reversal of 21221110010011 is 11001001112212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21221110010011 - 2³ = 21221110010003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21221110009973 and 21221110010000.

It is not an unprimeable number, because it can be changed into a prime (21221110010041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5558172531 + ... + 5558176348.

It is an arithmetic number, because the mean of its divisors is an integer number (2801319917760).

Almost surely, 2^{21221110010011} is an apocalyptic number.

21221110010011 is a deficient number, since it is larger than the sum of its proper divisors (1189449332069).

21221110010011 is a wasteful number, since it uses less digits than its factorization.

21221110010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11116348985.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21221110010011 its reverse (11001001112212), we get a palindrome (32222111122223).

The spelling of 21221110010011 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred ten million, ten thousand, eleven".