21032103102 has 32 divisors (see below), whose sum is σ = 43010572320. Its totient is φ = 6853916160.

The previous prime is 21032103083. The next prime is 21032103119. The reversal of 21032103102 is 20130123012.

It is a congruent number.

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, 28327 + ... + 207042.

It is an arithmetic number, because the mean of its divisors is an integer number (1344080385).

Almost surely, 2^21032103102 is an apocalyptic number.

21032103102 is an abundant number, since it is smaller than the sum of its proper divisors (21978469218).

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

21032103102 is a wasteful number, since it uses less digits than its factorization.

21032103102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235708.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21032103102 its reverse (20130123012), we get a palindrome (41162226114).

The spelling of 21032103102 in words is "twenty-one billion, thirty-two million, one hundred three thousand, one hundred two".