20013210002 has 4 divisors (see below), whose sum is σ = 30019815006. Its totient is φ = 10006605000.

The previous prime is 20013209971. The next prime is 20013210023. The reversal of 20013210002 is 20001231002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16777761841 + 3235448161 = 129529^2 + 56881^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003302499 + ... + 5003302502.

Almost surely, 2^20013210002 is an apocalyptic number.

20013210002 is a deficient number, since it is larger than the sum of its proper divisors (10006605004).

20013210002 is a wasteful number, since it uses less digits than its factorization.

20013210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006605003.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20013210002 its reverse (20001231002), we get a palindrome (40014441004).

The spelling of 20013210002 in words is "twenty billion, thirteen million, two hundred ten thousand, two".