200221220138 has 8 divisors (see below), whose sum is σ = 300472113060. Its totient is φ = 100063849120.

The previous prime is 200221220137. The next prime is 200221220141. The reversal of 200221220138 is 831022122002.

It can be written as a sum of positive squares in 2 ways, for example, as 163283070889 + 36938149249 = 404083^2 + 192193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (200221220137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23375123 + ... + 23383686.

Almost surely, 2^200221220138 is an apocalyptic number.

200221220138 is a deficient number, since it is larger than the sum of its proper divisors (100250892922).

200221220138 is a wasteful number, since it uses less digits than its factorization.

200221220138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46760952.

The product of its (nonzero) digits is 768, while the sum is 23.

The spelling of 200221220138 in words is "two hundred billion, two hundred twenty-one million, two hundred twenty thousand, one hundred thirty-eight".