21102122200011 has 16 divisors (see below), whose sum is σ = 29855575286784. Its totient is φ = 13211949953664.

The previous prime is 21102122199959. The next prime is 21102122200057. The reversal of 21102122200011 is 11000222120112.

It is not a de Polignac number, because 21102122200011 - 2⁷ = 21102122199883 is a prime.

It is a super-2 number, since 2×21102122200011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21102122205011) 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, 446809111 + ... + 446856336.

It is an arithmetic number, because the mean of its divisors is an integer number (1865973455424).

Almost surely, 2^{21102122200011} is an apocalyptic number.

21102122200011 is a deficient number, since it is larger than the sum of its proper divisors (8753453086773).

21102122200011 is a wasteful number, since it uses less digits than its factorization.

21102122200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893665930.

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

Adding to 21102122200011 its reverse (11000222120112), we get a palindrome (32102344320123).

The spelling of 21102122200011 in words is "twenty-one trillion, one hundred two billion, one hundred twenty-two million, two hundred thousand, eleven".