1200221201 has 4 divisors (see below), whose sum is σ = 1200494592. Its totient is φ = 1199947812.

The previous prime is 1200221147. The next prime is 1200221287. The reversal of 1200221201 is 1021220021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200221201 - 2⁶ = 1200221137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200221291) 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, 130001 + ... + 138926.

It is an arithmetic number, because the mean of its divisors is an integer number (300123648).

Almost surely, 2^1200221201 is an apocalyptic number.

It is an amenable number.

1200221201 is a deficient number, since it is larger than the sum of its proper divisors (273391).

1200221201 is an equidigital number, since it uses as much as digits as its factorization.

1200221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273390.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1200221201 is about 34644.2087656797. The cubic root of 1200221201 is about 1062.7238599316.

Adding to 1200221201 its reverse (1021220021), we get a palindrome (2221441222).

The spelling of 1200221201 in words is "one billion, two hundred million, two hundred twenty-one thousand, two hundred one".