21101201002 has 32 divisors (see below), whose sum is σ = 36642222720. Its totient is φ = 8926794240.

The previous prime is 21101200997. The next prime is 21101201039. The reversal of 21101201002 is 20010210112.

It is a self number, because there is not a number n which added to its sum of digits gives 21101201002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395874 + ... + 446002.

It is an arithmetic number, because the mean of its divisors is an integer number (1145069460).

Almost surely, 2^21101201002 is an apocalyptic number.

21101201002 is a deficient number, since it is larger than the sum of its proper divisors (15541021718).

21101201002 is a wasteful number, since it uses less digits than its factorization.

21101201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50526.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21101201002 its reverse (20010210112), we get a palindrome (41111411114).

The spelling of 21101201002 in words is "twenty-one billion, one hundred one million, two hundred one thousand, two".