21200122202211 has 40 divisors (see below), whose sum is σ = 32139509447760. Its totient is φ = 13924016080128.

The previous prime is 21200122202209. The next prime is 21200122202213. The reversal of 21200122202211 is 11220222100212.

It is a happy number.

21200122202211 is a `hidden beast` number, since 21 + 200 + 1 + 2 + 220 + 221 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21200122202209) and next prime (21200122202213).

It is not a de Polignac number, because 21200122202211 - 2¹ = 21200122202209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21200122202213) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3190975 + ... + 7251383.

It is an arithmetic number, because the mean of its divisors is an integer number (803487736194).

Almost surely, 2^{21200122202211} is an apocalyptic number.

21200122202211 is a deficient number, since it is larger than the sum of its proper divisors (10939387245549).

21200122202211 is an equidigital number, since it uses as much as digits as its factorization.

21200122202211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061377 (or 4061368 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21200122202211 its reverse (11220222100212), we get a palindrome (32420344302423).

The spelling of 21200122202211 in words is "twenty-one trillion, two hundred billion, one hundred twenty-two million, two hundred two thousand, two hundred eleven".