21022102102011 has 16 divisors (see below), whose sum is σ = 28560195664416. Its totient is φ = 13749406235136.

The previous prime is 21022102101953. The next prime is 21022102102013. The reversal of 21022102102011 is 11020120122012.

It is not a de Polignac number, because 21022102102011 - 2⁷ = 21022102101883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022102102013) 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, 1882300 + ... + 6751833.

It is an arithmetic number, because the mean of its divisors is an integer number (1785012229026).

Almost surely, 2^{21022102102011} is an apocalyptic number.

21022102102011 is a deficient number, since it is larger than the sum of its proper divisors (7538093562405).

21022102102011 is a wasteful number, since it uses less digits than its factorization.

21022102102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8649502.

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

Adding to 21022102102011 its reverse (11020120122012), we get a palindrome (32042222224023).

The spelling of 21022102102011 in words is "twenty-one trillion, twenty-two billion, one hundred two million, one hundred two thousand, eleven".