20000221012202 has 4 divisors (see below), whose sum is σ = 30000331518306. Its totient is φ = 10000110506100.

The previous prime is 20000221012183. The next prime is 20000221012241. The reversal of 20000221012202 is 20221012200002.

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., 15780446396521 + 4219774615681 = 3972461^2 + 2054209^2 .

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, 5000055253049 + ... + 5000055253052.

Almost surely, 2^{20000221012202} is an apocalyptic number.

20000221012202 is a deficient number, since it is larger than the sum of its proper divisors (10000110506104).

20000221012202 is a wasteful number, since it uses less digits than its factorization.

20000221012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000110506103.

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

Adding to 20000221012202 its reverse (20221012200002), we get a palindrome (40221233212204).

The spelling of 20000221012202 in words is "twenty trillion, two hundred twenty-one million, twelve thousand, two hundred two".