21230010010 has 32 divisors (see below), whose sum is σ = 41749204032. Its totient is φ = 7708673280.

The previous prime is 21230009951. The next prime is 21230010119. The reversal of 21230010010 is 1001003212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66159 + ... + 216418.

It is an arithmetic number, because the mean of its divisors is an integer number (1304662626).

Almost surely, 2^21230010010 is an apocalyptic number.

21230010010 is a deficient number, since it is larger than the sum of its proper divisors (20519194022).

21230010010 is a wasteful number, since it uses less digits than its factorization.

21230010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283278.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 21230010010 its reverse (1001003212), we get a palindrome (22231013222).

The spelling of 21230010010 in words is "twenty-one billion, two hundred thirty million, ten thousand, ten".