20001200202202 has 4 divisors (see below), whose sum is σ = 30001800303306. Its totient is φ = 10000600101100.

The previous prime is 20001200202199. The next prime is 20001200202257. The reversal of 20001200202202 is 20220200210002.

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., 11946223981561 + 8054976220641 = 3456331^2 + 2838129^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000300050549 + ... + 5000300050552.

Almost surely, 2^{20001200202202} is an apocalyptic number.

20001200202202 is a deficient number, since it is larger than the sum of its proper divisors (10000600101104).

20001200202202 is a wasteful number, since it uses less digits than its factorization.

20001200202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000600101103.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20001200202202 its reverse (20220200210002), we get a palindrome (40221400412204).

The spelling of 20001200202202 in words is "twenty trillion, one billion, two hundred million, two hundred two thousand, two hundred two".