1200402221 has 8 divisors (see below), whose sum is σ = 1206152640. Its totient is φ = 1194661312.

The previous prime is 1200402187. The next prime is 1200402239. The reversal of 1200402221 is 1222040021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200402221 - 2³⁰ = 126660397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200402196 and 1200402205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200405221) 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 7 ways as a sum of consecutive naturals, for example, 406970 + ... + 409908.

It is an arithmetic number, because the mean of its divisors is an integer number (150769080).

Almost surely, 2^1200402221 is an apocalyptic number.

It is an amenable number.

1200402221 is a deficient number, since it is larger than the sum of its proper divisors (5750419).

1200402221 is a wasteful number, since it uses less digits than its factorization.

1200402221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4755.

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

The square root of 1200402221 is about 34646.8212250417. The cubic root of 1200402221 is about 1062.7772846954. Note that the first 3 decimals are identical.

Adding to 1200402221 its reverse (1222040021), we get a palindrome (2422442242).

The spelling of 1200402221 in words is "one billion, two hundred million, four hundred two thousand, two hundred twenty-one".