21350002 has 8 divisors (see below), whose sum is σ = 32053212. Its totient is φ = 10665600.

The previous prime is 21349997. The next prime is 21350009. The reversal of 21350002 is 20005312.

It can be written as a sum of positive squares in 2 ways, for example, as 20711601 + 638401 = 4551^2 + 799^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21350009) 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, 1399 + ... + 6682.

Almost surely, 2^21350002 is an apocalyptic number.

21350002 is a deficient number, since it is larger than the sum of its proper divisors (10703210).

21350002 is a wasteful number, since it uses less digits than its factorization.

21350002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9404.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 21350002 is about 4620.6062372810. The cubic root of 21350002 is about 277.4167247350.

Adding to 21350002 its reverse (20005312), we get a palindrome (41355314).

The spelling of 21350002 in words is "twenty-one million, three hundred fifty thousand, two".