21220002112011 has 16 divisors (see below), whose sum is σ = 29705818713600. Its totient is φ = 13454988468768.

The previous prime is 21220002112007. The next prime is 21220002112021. The reversal of 21220002112011 is 11021120002212.

It is not a de Polignac number, because 21220002112011 - 2² = 21220002112007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220002112021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1820203651 + ... + 1820215308.

It is an arithmetic number, because the mean of its divisors is an integer number (1856613669600).

Almost surely, 2^{21220002112011} is an apocalyptic number.

21220002112011 is a deficient number, since it is larger than the sum of its proper divisors (8485816601589).

21220002112011 is a wasteful number, since it uses less digits than its factorization.

21220002112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640419058.

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

Adding to 21220002112011 its reverse (11021120002212), we get a palindrome (32241122114223).

The spelling of 21220002112011 in words is "twenty-one trillion, two hundred twenty billion, two million, one hundred twelve thousand, eleven".