12021301252 has 6 divisors (see below), whose sum is σ = 21037277198. Its totient is φ = 6010650624.

The previous prime is 12021301247. The next prime is 12021301291. The reversal of 12021301252 is 25210312021.

It can be written as a sum of positive squares in only one way, i.e., 9575405316 + 2445895936 = 97854^2 + 49456^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1502662653 + ... + 1502662660.

Almost surely, 2^12021301252 is an apocalyptic number.

It is an amenable number.

12021301252 is a deficient number, since it is larger than the sum of its proper divisors (9015975946).

12021301252 is a wasteful number, since it uses less digits than its factorization.

12021301252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005325317 (or 3005325315 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 12021301252 its reverse (25210312021), we get a palindrome (37231613273).

The spelling of 12021301252 in words is "twelve billion, twenty-one million, three hundred one thousand, two hundred fifty-two".