21022010211 has 16 divisors (see below), whose sum is σ = 28888358400. Its totient is φ = 13590639648.

The previous prime is 21022010209. The next prime is 21022010213. The reversal of 21022010211 is 11201022012.

It is an interprime number because it is at equal distance from previous prime (21022010209) and next prime (21022010213).

It is not a de Polignac number, because 21022010211 - 2¹ = 21022010209 is a prime.

It is a super-2 number, since 2×21022010211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022010213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 668541 + ... + 699278.

It is an arithmetic number, because the mean of its divisors is an integer number (1805522400).

Almost surely, 2^21022010211 is an apocalyptic number.

21022010211 is a deficient number, since it is larger than the sum of its proper divisors (7866348189).

21022010211 is a wasteful number, since it uses less digits than its factorization.

21022010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367978.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21022010211 its reverse (11201022012), we get a palindrome (32223032223).

The spelling of 21022010211 in words is "twenty-one billion, twenty-two million, ten thousand, two hundred eleven".