1205122201 has 8 divisors (see below), whose sum is σ = 1210809600. Its totient is φ = 1199447040.

The previous prime is 1205122199. The next prime is 1205122207. The reversal of 1205122201 is 1022215021.

It is a happy number.

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 1205122201 - 2¹ = 1205122199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205122207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236640 + ... + 241678.

It is an arithmetic number, because the mean of its divisors is an integer number (151351200).

Almost surely, 2^1205122201 is an apocalyptic number.

It is an amenable number.

1205122201 is a deficient number, since it is larger than the sum of its proper divisors (5687399).

1205122201 is an equidigital number, since it uses as much as digits as its factorization.

1205122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1205122201 is about 34714.8700271224. The cubic root of 1205122201 is about 1064.1684092941.

Adding to 1205122201 its reverse (1022215021), we get a palindrome (2227337222).

The spelling of 1205122201 in words is "one billion, two hundred five million, one hundred twenty-two thousand, two hundred one".