21001131002 has 8 divisors (see below), whose sum is σ = 31507963200. Its totient is φ = 10498476604.

The previous prime is 21001130993. The next prime is 21001131023. The reversal of 21001131002 is 20013110012.

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, 1031852 + ... + 1052007.

It is an arithmetic number, because the mean of its divisors is an integer number (3938495400).

Almost surely, 2^21001131002 is an apocalyptic number.

21001131002 is a deficient number, since it is larger than the sum of its proper divisors (10506832198).

21001131002 is a wasteful number, since it uses less digits than its factorization.

21001131002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088900.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21001131002 its reverse (20013110012), we get a palindrome (41014241014).

The spelling of 21001131002 in words is "twenty-one billion, one million, one hundred thirty-one thousand, two".