21342130202 has 8 divisors (see below), whose sum is σ = 32022056916. Its totient is φ = 10668111232.

The previous prime is 21342130189. The next prime is 21342130211. The reversal of 21342130202 is 20203124312.

It can be written as a sum of positive squares in 2 ways, for example, as 12651975361 + 8690154841 = 112481^2 + 93221^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467893 + ... + 1482360.

Almost surely, 2^21342130202 is an apocalyptic number.

21342130202 is a deficient number, since it is larger than the sum of its proper divisors (10679926714).

21342130202 is a wasteful number, since it uses less digits than its factorization.

21342130202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953872.

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

Adding to 21342130202 its reverse (20203124312), we get a palindrome (41545254514).

The spelling of 21342130202 in words is "twenty-one billion, three hundred forty-two million, one hundred thirty thousand, two hundred two".