21220200012011 has 32 divisors (see below), whose sum is σ = 28610668800000. Its totient is φ = 15199417457280.

The previous prime is 21220200011951. The next prime is 21220200012029. The reversal of 21220200012011 is 11021000202212.

It is not a de Polignac number, because 21220200012011 - 2⁶ = 21220200011947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220200012031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44110136 + ... + 44588613.

It is an arithmetic number, because the mean of its divisors is an integer number (894083400000).

Almost surely, 2^{21220200012011} is an apocalyptic number.

21220200012011 is a deficient number, since it is larger than the sum of its proper divisors (7390468787989).

21220200012011 is a wasteful number, since it uses less digits than its factorization.

21220200012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88699019.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21220200012011 its reverse (11021000202212), we get a palindrome (32241200214223).

The spelling of 21220200012011 in words is "twenty-one trillion, two hundred twenty billion, two hundred million, twelve thousand, eleven".