21122001120211 has 8 divisors (see below), whose sum is σ = 21615388977600. Its totient is φ = 20628712286952.

The previous prime is 21122001120197. The next prime is 21122001120247. The reversal of 21122001120211 is 11202110022112.

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 21122001120211 - 2⁷ = 21122001120083 is a prime.

It is a super-2 number, since 2×21122001120211² (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 (21122001120611) 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, 24324361 + ... + 25177738.

It is an arithmetic number, because the mean of its divisors is an integer number (2701923622200).

Almost surely, 2^{21122001120211} is an apocalyptic number.

21122001120211 is a deficient number, since it is larger than the sum of its proper divisors (493387857389).

21122001120211 is an equidigital number, since it uses as much as digits as its factorization.

21122001120211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49512065.

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

Adding to 21122001120211 its reverse (11202110022112), we get a palindrome (32324111142323).

The spelling of 21122001120211 in words is "twenty-one trillion, one hundred twenty-two billion, one million, one hundred twenty thousand, two hundred eleven".