1212111330 has 16 divisors (see below), whose sum is σ = 2909067264. Its totient is φ = 323229680.

The previous prime is 1212111323. The next prime is 1212111343. The reversal of 1212111330 is 331112121.

It is a happy number.

1212111330 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

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, 20201826 + ... + 20201885.

It is an arithmetic number, because the mean of its divisors is an integer number (181816704).

Almost surely, 2^1212111330 is an apocalyptic number.

1212111330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212111330 is an abundant number, since it is smaller than the sum of its proper divisors (1696955934).

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

1212111330 is a wasteful number, since it uses less digits than its factorization.

1212111330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40403721.

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

The square root of 1212111330 is about 34815.3892696893. The cubic root of 1212111330 is about 1066.2216666995.

Adding to 1212111330 its reverse (331112121), we get a palindrome (1543223451).

The spelling of 1212111330 in words is "one billion, two hundred twelve million, one hundred eleven thousand, three hundred thirty".