1201211144 has 32 divisors (see below), whose sum is σ = 2575281600. Its totient is φ = 514553280.

The previous prime is 1201211119. The next prime is 1201211147. The reversal of 1201211144 is 4411121021.

It is not an unprimeable number, because it can be changed into a prime (1201211147) 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, 152339 + ... + 160029.

It is an arithmetic number, because the mean of its divisors is an integer number (80477550).

Almost surely, 2^1201211144 is an apocalyptic number.

1201211144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1201211144 is an abundant number, since it is smaller than the sum of its proper divisors (1374070456).

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

1201211144 is a wasteful number, since it uses less digits than its factorization.

1201211144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10493 (or 10489 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1201211144 is about 34658.4931005374. The cubic root of 1201211144 is about 1063.0159580153.

Adding to 1201211144 its reverse (4411121021), we get a palindrome (5612332165).

The spelling of 1201211144 in words is "one billion, two hundred one million, two hundred eleven thousand, one hundred forty-four".