21202122100011 has 32 divisors (see below), whose sum is σ = 30219813076992. Its totient is φ = 13199704872480.

The previous prime is 21202122099953. The next prime is 21202122100013. The reversal of 21202122100011 is 11000122120212.

It is not a de Polignac number, because 21202122100011 - 2¹⁴ = 21202122083627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202122100013) 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, 31606975 + ... + 32270808.

It is an arithmetic number, because the mean of its divisors is an integer number (944369158656).

Almost surely, 2^{21202122100011} is an apocalyptic number.

21202122100011 is a deficient number, since it is larger than the sum of its proper divisors (9017690976981).

21202122100011 is a wasteful number, since it uses less digits than its factorization.

21202122100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63877943.

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

Adding to 21202122100011 its reverse (11000122120212), we get a palindrome (32202244220223).

The spelling of 21202122100011 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-two million, one hundred thousand, eleven".