21023103202 has 8 divisors (see below), whose sum is σ = 31555780956. Its totient is φ = 10504509552.

The previous prime is 21023103191. The next prime is 21023103203. The reversal of 21023103202 is 20230132012.

It can be written as a sum of positive squares in 2 ways, for example, as 20724193681 + 298909521 = 143959^2 + 17289^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21023103203) 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, 3517293 + ... + 3523264.

Almost surely, 2^21023103202 is an apocalyptic number.

21023103202 is a deficient number, since it is larger than the sum of its proper divisors (10532677754).

21023103202 is a wasteful number, since it uses less digits than its factorization.

21023103202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042052.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21023103202 its reverse (20230132012), we get a palindrome (41253235214).

The spelling of 21023103202 in words is "twenty-one billion, twenty-three million, one hundred three thousand, two hundred two".