21300002 has 8 divisors (see below), whose sum is σ = 31971996. Its totient is φ = 10642672.

The previous prime is 21299987. The next prime is 21300029. The reversal of 21300002 is 20000312.

It can be written as a sum of positive squares in 2 ways, for example, as 21242881 + 57121 = 4609^2 + 239^2 .

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, 1328 + ... + 6660.

Almost surely, 2^21300002 is an apocalyptic number.

21300002 is a deficient number, since it is larger than the sum of its proper divisors (10671994).

21300002 is a wasteful number, since it uses less digits than its factorization.

21300002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 21300002 is about 4615.1925203614. The cubic root of 21300002 is about 277.1999928509.

Adding to 21300002 its reverse (20000312), we get a palindrome (41300314).

The spelling of 21300002 in words is "twenty-one million, three hundred thousand, two".