21200012102211 has 4 divisors (see below), whose sum is σ = 28266682802952. Its totient is φ = 14133341401472.

The previous prime is 21200012102209. The next prime is 21200012102263. The reversal of 21200012102211 is 11220121000212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21200012102211 - 2¹ = 21200012102209 is a prime.

It is a super-2 number, since 2×21200012102211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21200012102281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533335350366 + ... + 3533335350371.

It is an arithmetic number, because the mean of its divisors is an integer number (7066670700738).

Almost surely, 2^{21200012102211} is an apocalyptic number.

21200012102211 is a deficient number, since it is larger than the sum of its proper divisors (7066670700741).

21200012102211 is an equidigital number, since it uses as much as digits as its factorization.

21200012102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066670700740.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21200012102211 its reverse (11220121000212), we get a palindrome (32420133102423).

The spelling of 21200012102211 in words is "twenty-one trillion, two hundred billion, twelve million, one hundred two thousand, two hundred eleven".