21031103010 has 16 divisors (see below), whose sum is σ = 50474647296. Its totient is φ = 5608294128.

The previous prime is 21031102999. The next prime is 21031103011. The reversal of 21031103010 is 1030113012.

It is not an unprimeable number, because it can be changed into a prime (21031103011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350518354 + ... + 350518413.

It is an arithmetic number, because the mean of its divisors is an integer number (3154665456).

Almost surely, 2^21031103010 is an apocalyptic number.

21031103010 is an abundant number, since it is smaller than the sum of its proper divisors (29443544286).

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

21031103010 is a wasteful number, since it uses less digits than its factorization.

21031103010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701036777.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 21031103010 its reverse (1030113012), we get a palindrome (22061216022).

The spelling of 21031103010 in words is "twenty-one billion, thirty-one million, one hundred three thousand, ten".