12212120032 has 24 divisors (see below), whose sum is σ = 27477270576. Its totient is φ = 5233765632.

The previous prime is 12212120003. The next prime is 12212120033. The reversal of 12212120032 is 23002121221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12212119988 and 12212120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212120033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27258973 + ... + 27259420.

It is an arithmetic number, because the mean of its divisors is an integer number (1144886274).

Almost surely, 2^12212120032 is an apocalyptic number.

It is an amenable number.

12212120032 is an abundant number, since it is smaller than the sum of its proper divisors (15265150544).

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

12212120032 is an equidigital number, since it uses as much as digits as its factorization.

12212120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54518410 (or 54518402 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12212120032 its reverse (23002121221), we get a palindrome (35214241253).

The spelling of 12212120032 in words is "twelve billion, two hundred twelve million, one hundred twenty thousand, thirty-two".