21021023023010 has 96 divisors (see below), whose sum is σ = 40852062590400. Its totient is φ = 7766315251200.

The previous prime is 21021023022977. The next prime is 21021023023019. The reversal of 21021023023010 is 1032032012012.

It is a self number, because there is not a number n which added to its sum of digits gives 21021023023010.

It is not an unprimeable number, because it can be changed into a prime (21021023023019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 488964596 + ... + 489007584.

It is an arithmetic number, because the mean of its divisors is an integer number (425542318650).

Almost surely, 2^{21021023023010} is an apocalyptic number.

21021023023010 is a deficient number, since it is larger than the sum of its proper divisors (19831039567390).

21021023023010 is a wasteful number, since it uses less digits than its factorization.

21021023023010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44628 (or 44587 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21021023023010 its reverse (1032032012012), we get a palindrome (22053055035022).

The spelling of 21021023023010 in words is "twenty-one trillion, twenty-one billion, twenty-three million, twenty-three thousand, ten".