21350230002 has 12 divisors (see below), whose sum is σ = 46258831710. Its totient is φ = 7116743328.

The previous prime is 21350230001. The next prime is 21350230043. The reversal of 21350230002 is 20003205312.

It can be written as a sum of positive squares in only one way, i.e., 18881233281 + 2468996721 = 137409^2 + 49689^2 .

It is a super-2 number, since 2×21350230002² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1186123889 = 21350230002 / (2 + 1 + 3 + 5 + 0 + 2 + 3 + 0 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (21350230001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 593061927 + ... + 593061962.

Almost surely, 2^21350230002 is an apocalyptic number.

21350230002 is an abundant number, since it is smaller than the sum of its proper divisors (24908601708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21350230002 is a wasteful number, since it uses less digits than its factorization.

21350230002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186123897 (or 1186123894 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 21350230002 its reverse (20003205312), we get a palindrome (41353435314).

The spelling of 21350230002 in words is "twenty-one billion, three hundred fifty million, two hundred thirty thousand, two".