21303122102 has 4 divisors (see below), whose sum is σ = 31954683156. Its totient is φ = 10651561050.

The previous prime is 21303122089. The next prime is 21303122111. The reversal of 21303122102 is 20122130312.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21303122102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325780524 + ... + 5325780527.

It is an arithmetic number, because the mean of its divisors is an integer number (7988670789).

Almost surely, 2^21303122102 is an apocalyptic number.

21303122102 is a deficient number, since it is larger than the sum of its proper divisors (10651561054).

21303122102 is a wasteful number, since it uses less digits than its factorization.

21303122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651561053.

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

Adding to 21303122102 its reverse (20122130312), we get a palindrome (41425252414).

The spelling of 21303122102 in words is "twenty-one billion, three hundred three million, one hundred twenty-two thousand, one hundred two".