21211002212011 has 8 divisors (see below), whose sum is σ = 21221935257600. Its totient is φ = 21200070914088.

The previous prime is 21211002212003. The next prime is 21211002212087. The reversal of 21211002212011 is 11021220011212.

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 21211002212011 - 2³ = 21211002212003 is a prime.

It is a super-2 number, since 2×21211002212011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211002212111) 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, 24199950 + ... + 25061116.

It is an arithmetic number, because the mean of its divisors is an integer number (2652741907200).

Almost surely, 2^{21211002212011} is an apocalyptic number.

21211002212011 is a deficient number, since it is larger than the sum of its proper divisors (10933045589).

21211002212011 is a wasteful number, since it uses less digits than its factorization.

21211002212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873833.

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

Adding to 21211002212011 its reverse (11021220011212), we get a palindrome (32232222223223).

The spelling of 21211002212011 in words is "twenty-one trillion, two hundred eleven billion, two million, two hundred twelve thousand, eleven".