12145213352 has 8 divisors (see below), whose sum is σ = 22772275050. Its totient is φ = 6072606672.

The previous prime is 12145213343. The next prime is 12145213403. The reversal of 12145213352 is 25331254121.

It can be written as a sum of positive squares in only one way, i.e., 9941286436 + 2203926916 = 99706^2 + 46946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 759075827 + ... + 759075842.

Almost surely, 2^12145213352 is an apocalyptic number.

It is an amenable number.

12145213352 is a deficient number, since it is larger than the sum of its proper divisors (10627061698).

12145213352 is a wasteful number, since it uses less digits than its factorization.

12145213352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518151675 (or 1518151671 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

Adding to 12145213352 its reverse (25331254121), we get a palindrome (37476467473).

The spelling of 12145213352 in words is "twelve billion, one hundred forty-five million, two hundred thirteen thousand, three hundred fifty-two".