21030202203002 has 4 divisors (see below), whose sum is σ = 31545303304506. Its totient is φ = 10515101101500.

The previous prime is 21030202202987. The next prime is 21030202203071. The reversal of 21030202203002 is 20030220203012.

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., 20711701122121 + 318501080881 = 4551011^2 + 564359^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5257550550749 + ... + 5257550550752.

Almost surely, 2^{21030202203002} is an apocalyptic number.

21030202203002 is a deficient number, since it is larger than the sum of its proper divisors (10515101101504).

21030202203002 is a wasteful number, since it uses less digits than its factorization.

21030202203002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515101101503.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21030202203002 its reverse (20030220203012), we get a palindrome (41060422406014).

The spelling of 21030202203002 in words is "twenty-one trillion, thirty billion, two hundred two million, two hundred three thousand, two".