200221506 has 24 divisors (see below), whose sum is σ = 456646320. Its totient is φ = 63227736.

The previous prime is 200221493. The next prime is 200221517. The reversal of 200221506 is 605122002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 292380 + ... + 293063.

It is an arithmetic number, because the mean of its divisors is an integer number (19026930).

Almost surely, 2^200221506 is an apocalyptic number.

200221506 is an abundant number, since it is smaller than the sum of its proper divisors (256424814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200221506 is a wasteful number, since it uses less digits than its factorization.

200221506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585470 (or 585467 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 200221506 is about 14149.9648762815. The cubic root of 200221506 is about 585.0193638123.

Adding to 200221506 its reverse (605122002), we get a palindrome (805343508).

It can be divided in two parts, 20022 and 1506, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 200221506 in words is "two hundred million, two hundred twenty-one thousand, five hundred six".