21145002230 has 32 divisors (see below), whose sum is σ = 41617525248. Its totient is φ = 7671234400.

The previous prime is 21145002211. The next prime is 21145002233. The reversal of 21145002230 is 3220054112.

It is a super-2 number, since 2×21145002230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21145002233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175592 + ... + 270411.

It is an arithmetic number, because the mean of its divisors is an integer number (1300547664).

Almost surely, 2^21145002230 is an apocalyptic number.

21145002230 is a deficient number, since it is larger than the sum of its proper divisors (20472523018).

21145002230 is a wasteful number, since it uses less digits than its factorization.

21145002230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446452.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 21145002230 its reverse (3220054112), we get a palindrome (24365056342).

The spelling of 21145002230 in words is "twenty-one billion, one hundred forty-five million, two thousand, two hundred thirty".