32012121240 has 128 divisors (see below), whose sum is σ = 116407756800. Its totient is φ = 7760511360.

The previous prime is 32012121233. The next prime is 32012121241. The reversal of 32012121240 is 4212121023.

It is a happy number.

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 (32012121241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1335432 + ... + 1359191.

It is an arithmetic number, because the mean of its divisors is an integer number (909435600).

Almost surely, 2^32012121240 is an apocalyptic number.

32012121240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32012121240 is an abundant number, since it is smaller than the sum of its proper divisors (84395635560).

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

32012121240 is a wasteful number, since it uses less digits than its factorization.

32012121240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694654 (or 2694644 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 32012121240 its reverse (4212121023), we get a palindrome (36224242263).

The spelling of 32012121240 in words is "thirty-two billion, twelve million, one hundred twenty-one thousand, two hundred forty".