21203234102 has 8 divisors (see below), whose sum is σ = 31838227416. Its totient is φ = 10590491632.

The previous prime is 21203234099. The next prime is 21203234123. The reversal of 21203234102 is 20143230212.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5560328 + ... + 5564139.

It is an arithmetic number, because the mean of its divisors is an integer number (3979778427).

Almost surely, 2^21203234102 is an apocalyptic number.

21203234102 is a deficient number, since it is larger than the sum of its proper divisors (10634993314).

21203234102 is a wasteful number, since it uses less digits than its factorization.

21203234102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11125422.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21203234102 its reverse (20143230212), we get a palindrome (41346464314).

The spelling of 21203234102 in words is "twenty-one billion, two hundred three million, two hundred thirty-four thousand, one hundred two".