21130021202 has 8 divisors (see below), whose sum is σ = 33073076736. Its totient is φ = 10105662292.

The previous prime is 21130021183. The next prime is 21130021219. The reversal of 21130021202 is 20212003112.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229674098 + ... + 229674189.

It is an arithmetic number, because the mean of its divisors is an integer number (4134134592).

Almost surely, 2^21130021202 is an apocalyptic number.

21130021202 is a deficient number, since it is larger than the sum of its proper divisors (11943055534).

21130021202 is a wasteful number, since it uses less digits than its factorization.

21130021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459348312.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21130021202 its reverse (20212003112), we get a palindrome (41342024314).

The spelling of 21130021202 in words is "twenty-one billion, one hundred thirty million, twenty-one thousand, two hundred two".