1212111132 has 24 divisors (see below), whose sum is σ = 2951227776. Its totient is φ = 386470128.

The previous prime is 1212111119. The next prime is 1212111139. The reversal of 1212111132 is 2311112121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212111139) 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, 2195578 + ... + 2196129.

It is an arithmetic number, because the mean of its divisors is an integer number (122967824).

Almost surely, 2^1212111132 is an apocalyptic number.

1212111132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212111132 is an abundant number, since it is smaller than the sum of its proper divisors (1739116644).

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

1212111132 is a wasteful number, since it uses less digits than its factorization.

1212111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391737 (or 4391735 counting only the distinct ones).

The product of its digits is 24, while the sum is 15.

The square root of 1212111132 is about 34815.3864261191. The cubic root of 1212111132 is about 1066.2216086432.

Adding to 1212111132 its reverse (2311112121), we get a palindrome (3523223253).

The spelling of 1212111132 in words is "one billion, two hundred twelve million, one hundred eleven thousand, one hundred thirty-two".