21301032002 has 8 divisors (see below), whose sum is σ = 32113739196. Its totient is φ = 10596452272.

The previous prime is 21301031989. The next prime is 21301032037. The reversal of 21301032002 is 20023010312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18763794361 + 2537237641 = 136981^2 + 50371^2 .

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, 27031373 + ... + 27032160.

Almost surely, 2^21301032002 is an apocalyptic number.

21301032002 is a deficient number, since it is larger than the sum of its proper divisors (10812707194).

21301032002 is a wasteful number, since it uses less digits than its factorization.

21301032002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54063732.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21301032002 its reverse (20023010312), we get a palindrome (41324042314).

The spelling of 21301032002 in words is "twenty-one billion, three hundred one million, thirty-two thousand, two".