1201214144 has 56 divisors (see below), whose sum is σ = 2582509440. Its totient is φ = 554341632.

The previous prime is 1201214137. The next prime is 1201214149. The reversal of 1201214144 is 4414121021.

It is not an unprimeable number, because it can be changed into a prime (1201214149) 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, 136337 + ... + 144879.

It is an arithmetic number, because the mean of its divisors is an integer number (46116240).

Almost surely, 2^1201214144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201214144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291254720).

1201214144 is an abundant number, since it is smaller than the sum of its proper divisors (1381295296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201214144 is an frugal number, since it uses more digits than its factorization.

1201214144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8594 (or 8558 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1201214144 is about 34658.5363799454. The cubic root of 1201214144 is about 1063.0168429681.

Adding to 1201214144 its reverse (4414121021), we get a palindrome (5615335165).

The spelling of 1201214144 in words is "one billion, two hundred one million, two hundred fourteen thousand, one hundred forty-four".