21135203002 has 16 divisors (see below), whose sum is σ = 32819818752. Its totient is φ = 10197228960.

The previous prime is 21135202993. The next prime is 21135203021. The reversal of 21135203002 is 20030253112.

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 7 ways as a sum of consecutive naturals, for example, 469683 + ... + 512710.

It is an arithmetic number, because the mean of its divisors is an integer number (2051238672).

Almost surely, 2^21135203002 is an apocalyptic number.

21135203002 is a deficient number, since it is larger than the sum of its proper divisors (11684615750).

21135203002 is a wasteful number, since it uses less digits than its factorization.

21135203002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982773.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 21135203002 its reverse (20030253112), we get a palindrome (41165456114).

The spelling of 21135203002 in words is "twenty-one billion, one hundred thirty-five million, two hundred three thousand, two".