20021233312202 has 4 divisors (see below), whose sum is σ = 30031849968306. Its totient is φ = 10010616656100.

The previous prime is 20021233312133. The next prime is 20021233312219. The reversal of 20021233312202 is 20221333212002.

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., 13956642467881 + 6064590844321 = 3735859^2 + 2462639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005308328049 + ... + 5005308328052.

Almost surely, 2^{20021233312202} is an apocalyptic number.

20021233312202 is a deficient number, since it is larger than the sum of its proper divisors (10010616656104).

20021233312202 is a wasteful number, since it uses less digits than its factorization.

20021233312202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010616656103.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20021233312202 its reverse (20221333212002), we get a palindrome (40242566524204).

The spelling of 20021233312202 in words is "twenty trillion, twenty-one billion, two hundred thirty-three million, three hundred twelve thousand, two hundred two".