21030103102 has 8 divisors (see below), whose sum is σ = 31684120776. Its totient is φ = 10468729512.

The previous prime is 21030103097. The next prime is 21030103103. The reversal of 21030103102 is 20130103012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030103103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23160453 + ... + 23161360.

It is an arithmetic number, because the mean of its divisors is an integer number (3960515097).

Almost surely, 2^21030103102 is an apocalyptic number.

21030103102 is a deficient number, since it is larger than the sum of its proper divisors (10654017674).

21030103102 is a wasteful number, since it uses less digits than its factorization.

21030103102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46322042.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21030103102 its reverse (20130103012), we get a palindrome (41160206114).

The spelling of 21030103102 in words is "twenty-one billion, thirty million, one hundred three thousand, one hundred two".