1201355215 has 8 divisors (see below), whose sum is σ = 1443535200. Its totient is φ = 959811552.

The previous prime is 1201355213. The next prime is 1201355219. The reversal of 1201355215 is 5125531021.

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 1201355215 - 2¹ = 1201355213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201355215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201355213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154915 + ... + 162484.

It is an arithmetic number, because the mean of its divisors is an integer number (180441900).

Almost surely, 2^1201355215 is an apocalyptic number.

1201355215 is a deficient number, since it is larger than the sum of its proper divisors (242179985).

1201355215 is an equidigital number, since it uses as much as digits as its factorization.

1201355215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318161.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1201355215 is about 34660.5714753811. The cubic root of 1201355215 is about 1063.0584550264.

Adding to 1201355215 its reverse (5125531021), we get a palindrome (6326886236).

The spelling of 1201355215 in words is "one billion, two hundred one million, three hundred fifty-five thousand, two hundred fifteen".