21211110010211 has 16 divisors (see below), whose sum is σ = 24978055138560. Its totient is φ = 17808428188320.

The previous prime is 21211110010193. The next prime is 21211110010219. The reversal of 21211110010211 is 11201001111212.

It is a de Polignac number, because none of the positive numbers 2^k-21211110010211 is a prime.

It is a super-2 number, since 2×21211110010211² (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 (21211110010219) 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 15 ways as a sum of consecutive naturals, for example, 1445481965 + ... + 1445496638.

It is an arithmetic number, because the mean of its divisors is an integer number (1561128446160).

Almost surely, 2^{21211110010211} is an apocalyptic number.

21211110010211 is a deficient number, since it is larger than the sum of its proper divisors (3766945128349).

21211110010211 is a wasteful number, since it uses less digits than its factorization.

21211110010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890978666.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21211110010211 its reverse (11201001111212), we get a palindrome (32412111121423).

The spelling of 21211110010211 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, ten thousand, two hundred eleven".