21130324402 has 8 divisors (see below), whose sum is σ = 34576894512. Its totient is φ = 9604692900.

The previous prime is 21130324393. The next prime is 21130324409. The reversal of 21130324402 is 20442303112.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 960469291 = 21130324402 / (2 + 1 + 1 + 3 + 0 + 3 + 2 + 4 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (21130324409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480234624 + ... + 480234667.

It is an arithmetic number, because the mean of its divisors is an integer number (4322111814).

Almost surely, 2^21130324402 is an apocalyptic number.

21130324402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21130324402 is a deficient number, since it is larger than the sum of its proper divisors (13446570110).

21130324402 is a wasteful number, since it uses less digits than its factorization.

21130324402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960469304.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21130324402 its reverse (20442303112), we get a palindrome (41572627514).

The spelling of 21130324402 in words is "twenty-one billion, one hundred thirty million, three hundred twenty-four thousand, four hundred two".