1212144441 has 16 divisors (see below), whose sum is σ = 1633093440. Its totient is φ = 799680960.

The previous prime is 1212144433. The next prime is 1212144443. The reversal of 1212144441 is 1444412121.

It is not a de Polignac number, because 1212144441 - 2³ = 1212144433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212144443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142455 + ... + 150723.

It is an arithmetic number, because the mean of its divisors is an integer number (102068340).

Almost surely, 2^1212144441 is an apocalyptic number.

It is an amenable number.

1212144441 is a deficient number, since it is larger than the sum of its proper divisors (420948999).

1212144441 is a wasteful number, since it uses less digits than its factorization.

1212144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776.

The product of its digits is 1024, while the sum is 24.

The square root of 1212144441 is about 34815.8647889148. The cubic root of 1212144441 is about 1066.2313751982.

Adding to 1212144441 its reverse (1444412121), we get a palindrome (2656556562).

The spelling of 1212144441 in words is "one billion, two hundred twelve million, one hundred forty-four thousand, four hundred forty-one".