21220012010011 has 8 divisors (see below), whose sum is σ = 22484780940800. Its totient is φ = 19970035698600.

The previous prime is 21220012009997. The next prime is 21220012010023. The reversal of 21220012010011 is 11001021002212.

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 21220012010011 - 2¹⁵ = 21220011977243 is a prime.

It is a super-2 number, since 2×21220012010011² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220012009973 and 21220012010000.

It is not an unprimeable number, because it can be changed into a prime (21220012010111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3698151891 + ... + 3698157628.

It is an arithmetic number, because the mean of its divisors is an integer number (2810597617600).

Almost surely, 2^{21220012010011} is an apocalyptic number.

21220012010011 is a deficient number, since it is larger than the sum of its proper divisors (1264768930789).

21220012010011 is a wasteful number, since it uses less digits than its factorization.

21220012010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7396309689.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21220012010011 its reverse (11001021002212), we get a palindrome (32221033012223).

The spelling of 21220012010011 in words is "twenty-one trillion, two hundred twenty billion, twelve million, ten thousand, eleven".