1201214555 has 4 divisors (see below), whose sum is σ = 1441457472. Its totient is φ = 960971640.

The previous prime is 1201214551. The next prime is 1201214569. The reversal of 1201214555 is 5554121021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1201214555 - 2² = 1201214551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201214551) 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, 120121451 + ... + 120121460.

It is an arithmetic number, because the mean of its divisors is an integer number (360364368).

Almost surely, 2^1201214555 is an apocalyptic number.

1201214555 is a deficient number, since it is larger than the sum of its proper divisors (240242917).

1201214555 is an equidigital number, since it uses as much as digits as its factorization.

1201214555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240242916.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1201214555 is about 34658.5423092201. The cubic root of 1201214555 is about 1063.0169642065.

Adding to 1201214555 its reverse (5554121021), we get a palindrome (6755335576).

The spelling of 1201214555 in words is "one billion, two hundred one million, two hundred fourteen thousand, five hundred fifty-five".