21130002202 has 16 divisors (see below), whose sum is σ = 33611804712. Its totient is φ = 9928007680.

The previous prime is 21130002199. The next prime is 21130002247. The reversal of 21130002202 is 20220003112.

It can be written as a sum of positive squares in 4 ways, for example, as 20517984081 + 612018121 = 143241^2 + 24739^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462973 + ... + 506560.

Almost surely, 2^21130002202 is an apocalyptic number.

21130002202 is a deficient number, since it is larger than the sum of its proper divisors (12481802510).

21130002202 is a wasteful number, since it uses less digits than its factorization.

21130002202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970193.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21130002202 its reverse (20220003112), we get a palindrome (41350005314).

The spelling of 21130002202 in words is "twenty-one billion, one hundred thirty million, two thousand, two hundred two".