32121400812 has 48 divisors (see below), whose sum is σ = 78605759232. Its totient is φ = 10189600960.

The previous prime is 32121400811. The next prime is 32121400813. The reversal of 32121400812 is 21800412123.

It is an interprime number because it is at equal distance from previous prime (32121400811) and next prime (32121400813).

It is not an unprimeable number, because it can be changed into a prime (32121400811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241014 + ... + 349757.

It is an arithmetic number, because the mean of its divisors is an integer number (1637619984).

Almost surely, 2^32121400812 is an apocalyptic number.

It is an amenable number.

32121400812 is an abundant number, since it is smaller than the sum of its proper divisors (46484358420).

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

32121400812 is a wasteful number, since it uses less digits than its factorization.

32121400812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590998 (or 590996 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 32121400812 its reverse (21800412123), we get a palindrome (53921812935).

The spelling of 32121400812 in words is "thirty-two billion, one hundred twenty-one million, four hundred thousand, eight hundred twelve".