21110002011002 has 8 divisors (see below), whose sum is σ = 31677084292212. Its totient is φ = 10550973913600.

The previous prime is 21110002010897. The next prime is 21110002011011. The reversal of 21110002011002 is 20011020001112.

It can be written as a sum of positive squares in 2 ways, for example, as 20505310701841 + 604691309161 = 4528279^2 + 777619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013539399 + ... + 2013549882.

Almost surely, 2^{21110002011002} is an apocalyptic number.

21110002011002 is a deficient number, since it is larger than the sum of its proper divisors (10567082281210).

21110002011002 is a wasteful number, since it uses less digits than its factorization.

21110002011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027091904.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21110002011002 its reverse (20011020001112), we get a palindrome (41121022012114).

The spelling of 21110002011002 in words is "twenty-one trillion, one hundred ten billion, two million, eleven thousand, two".