21221102002011 has 32 divisors (see below), whose sum is σ = 29815110912000. Its totient is φ = 13388809800960.

The previous prime is 21221102002007. The next prime is 21221102002013. The reversal of 21221102002011 is 11020020112212.

It is not a de Polignac number, because 21221102002011 - 2² = 21221102002007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21221102002013) 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, 221612535 + ... + 221708271.

It is an arithmetic number, because the mean of its divisors is an integer number (931722216000).

Almost surely, 2^{21221102002011} is an apocalyptic number.

21221102002011 is a deficient number, since it is larger than the sum of its proper divisors (8594008909989).

21221102002011 is a wasteful number, since it uses less digits than its factorization.

21221102002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99779.

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

Adding to 21221102002011 its reverse (11020020112212), we get a palindrome (32241122114223).

The spelling of 21221102002011 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred two million, two thousand, eleven".