1331211120 has 40 divisors (see below), whose sum is σ = 4126755216. Its totient is φ = 354989568.

The previous prime is 1331211107. The next prime is 1331211151. The reversal of 1331211120 is 211121331.

It is a happy number.

1331211120 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1331211120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2773117 + ... + 2773596.

Almost surely, 2^1331211120 is an apocalyptic number.

1331211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331211120 is an abundant number, since it is smaller than the sum of its proper divisors (2795544096).

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

1331211120 is a wasteful number, since it uses less digits than its factorization.

1331211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546729 (or 5546723 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1331211120 is about 36485.7659916850. The cubic root of 1331211120 is about 1100.0581567048.

Adding to 1331211120 its reverse (211121331), we get a palindrome (1542332451).

It can be divided in two parts, 1331211 and 120, that added together give a palindrome (1331331).

The spelling of 1331211120 in words is "one billion, three hundred thirty-one million, two hundred eleven thousand, one hundred twenty".