21001130002 has 16 divisors (see below), whose sum is σ = 31596553152. Its totient is φ = 10468982160.

The previous prime is 21001129997. The next prime is 21001130009. The reversal of 21001130002 is 20003110012.

It is a super-2 number, since 2×21001130002² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21001130009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273852 + ... + 1290232.

It is an arithmetic number, because the mean of its divisors is an integer number (1974784572).

Almost surely, 2^21001130002 is an apocalyptic number.

21001130002 is a deficient number, since it is larger than the sum of its proper divisors (10595423150).

21001130002 is a wasteful number, since it uses less digits than its factorization.

21001130002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18273.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21001130002 its reverse (20003110012), we get a palindrome (41004240014).

The spelling of 21001130002 in words is "twenty-one billion, one million, one hundred thirty thousand, two".