12351020052 has 24 divisors (see below), whose sum is σ = 32936053696. Its totient is φ = 3528862848.

The previous prime is 12351020021. The next prime is 12351020063. The reversal of 12351020052 is 25002015321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73517893 + ... + 73518060.

Almost surely, 2^12351020052 is an apocalyptic number.

12351020052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12351020052 is an abundant number, since it is smaller than the sum of its proper divisors (20585033644).

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

12351020052 is a wasteful number, since it uses less digits than its factorization.

12351020052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147035967 (or 147035965 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 12351020052 its reverse (25002015321), we get a palindrome (37353035373).

The spelling of 12351020052 in words is "twelve billion, three hundred fifty-one million, twenty thousand, fifty-two".