21202020002 has 32 divisors (see below), whose sum is σ = 33281539200. Its totient is φ = 10117312128.

The previous prime is 21202019983. The next prime is 21202020013. The reversal of 21202020002 is 20002020212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872803 + ... + 1884089.

It is an arithmetic number, because the mean of its divisors is an integer number (1040048100).

Almost surely, 2^21202020002 is an apocalyptic number.

21202020002 is a deficient number, since it is larger than the sum of its proper divisors (12079519198).

21202020002 is a wasteful number, since it uses less digits than its factorization.

21202020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11690.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 21202020002 its reverse (20002020212), we get a palindrome (41204040214).

The spelling of 21202020002 in words is "twenty-one billion, two hundred two million, twenty thousand, two".