3661221202 has 8 divisors (see below), whose sum is σ = 5492397312. Its totient is φ = 1830422100.

The previous prime is 3661221199. The next prime is 3661221209. The reversal of 3661221202 is 2021221663.

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 (3661221209) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 68574 + ... + 109657.

It is an arithmetic number, because the mean of its divisors is an integer number (686549664).

Almost surely, 2^3661221202 is an apocalyptic number.

3661221202 is a deficient number, since it is larger than the sum of its proper divisors (1831176110).

3661221202 is a wasteful number, since it uses less digits than its factorization.

3661221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188504.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 3661221202 is about 60508.0259304499. The cubic root of 3661221202 is about 1541.2579256519.

Adding to 3661221202 its reverse (2021221663), we get a palindrome (5682442865).

The spelling of 3661221202 in words is "three billion, six hundred sixty-one million, two hundred twenty-one thousand, two hundred two".