20121002200202 has 4 divisors (see below), whose sum is σ = 30181503300306. Its totient is φ = 10060501100100.

The previous prime is 20121002200109. The next prime is 20121002200213. The reversal of 20121002200202 is 20200220012102.

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., 19348464918721 + 772537281481 = 4398689^2 + 878941^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030250550049 + ... + 5030250550052.

Almost surely, 2^{20121002200202} is an apocalyptic number.

20121002200202 is a deficient number, since it is larger than the sum of its proper divisors (10060501100104).

20121002200202 is a wasteful number, since it uses less digits than its factorization.

20121002200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10060501100103.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20121002200202 its reverse (20200220012102), we get a palindrome (40321222212304).

The spelling of 20121002200202 in words is "twenty trillion, one hundred twenty-one billion, two million, two hundred thousand, two hundred two".