32012121312 has 36 divisors (see below), whose sum is σ = 91034470800. Its totient is φ = 10670707008.

The previous prime is 32012121307. The next prime is 32012121313. The reversal of 32012121312 is 21312121023.

32012121312 is a `hidden beast` number, since 320 + 1 + 212 + 131 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32012121313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55576312 + ... + 55576887.

It is an arithmetic number, because the mean of its divisors is an integer number (2528735300).

Almost surely, 2^32012121312 is an apocalyptic number.

32012121312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

32012121312 is an abundant number, since it is smaller than the sum of its proper divisors (59022349488).

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

32012121312 is a wasteful number, since it uses less digits than its factorization.

32012121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111153215 (or 111153204 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 32012121312 its reverse (21312121023), we get a palindrome (53324242335).

The spelling of 32012121312 in words is "thirty-two billion, twelve million, one hundred twenty-one thousand, three hundred twelve".