12142220852 has 6 divisors (see below), whose sum is σ = 21248886498. Its totient is φ = 6071110424.

The previous prime is 12142220851. The next prime is 12142220897. The reversal of 12142220852 is 25802224121.

It can be written as a sum of positive squares in only one way, i.e., 8806696336 + 3335524516 = 93844^2 + 57754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12142220851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1517777603 + ... + 1517777610.

It is an arithmetic number, because the mean of its divisors is an integer number (3541481083).

Almost surely, 2^12142220852 is an apocalyptic number.

It is an amenable number.

12142220852 is a deficient number, since it is larger than the sum of its proper divisors (9106665646).

12142220852 is a wasteful number, since it uses less digits than its factorization.

12142220852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035555217 (or 3035555215 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 12142220852 its reverse (25802224121), we get a palindrome (37944444973).

The spelling of 12142220852 in words is "twelve billion, one hundred forty-two million, two hundred twenty thousand, eight hundred fifty-two".