21000010022211 has 8 divisors (see below), whose sum is σ = 30545469123264. Its totient is φ = 12727278801320.

The previous prime is 21000010022197. The next prime is 21000010022279. The reversal of 21000010022211 is 11222001000012.

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 21000010022211 - 2¹⁰ = 21000010021187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21000010022711) 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, 318181970001 + ... + 318181970066.

It is an arithmetic number, because the mean of its divisors is an integer number (3818183640408).

Almost surely, 2^{21000010022211} is an apocalyptic number.

21000010022211 is a deficient number, since it is larger than the sum of its proper divisors (9545459101053).

21000010022211 is a wasteful number, since it uses less digits than its factorization.

21000010022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636363940081.

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

Adding to 21000010022211 its reverse (11222001000012), we get a palindrome (32222011022223).

The spelling of 21000010022211 in words is "twenty-one trillion, ten million, twenty-two thousand, two hundred eleven".