21101202011002 has 8 divisors (see below), whose sum is σ = 31651823962656. Its totient is φ = 10550594023452.

The previous prime is 21101202010981. The next prime is 21101202011017. The reversal of 21101202011002 is 20011020210112.

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

It is a super-2 number, since 2×21101202011002² (a number of 27 digits) contains 22 as substring.

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, 2038243 + ... + 6808585.

It is an arithmetic number, because the mean of its divisors is an integer number (3956477995332).

Almost surely, 2^{21101202011002} is an apocalyptic number.

21101202011002 is a deficient number, since it is larger than the sum of its proper divisors (10550621951654).

21101202011002 is a wasteful number, since it uses less digits than its factorization.

21101202011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6982052.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21101202011002 its reverse (20011020210112), we get a palindrome (41112222221114).

The spelling of 21101202011002 in words is "twenty-one trillion, one hundred one billion, two hundred two million, eleven thousand, two".