12013212510 has 96 divisors (see below), whose sum is σ = 34188624288. Its totient is φ = 2908604160.

The previous prime is 12013212487. The next prime is 12013212521. The reversal of 12013212510 is 1521231021.

12013212510 is a `hidden beast` number, since 1 + 20 + 132 + 1 + 2 + 510 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12792 + ... + 155531.

It is an arithmetic number, because the mean of its divisors is an integer number (356131503).

Almost surely, 2^12013212510 is an apocalyptic number.

12013212510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12013212510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17094312144).

12013212510 is an abundant number, since it is smaller than the sum of its proper divisors (22175411778).

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

12013212510 is a wasteful number, since it uses less digits than its factorization.

12013212510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168410 (or 168407 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 12013212510 its reverse (1521231021), we get a palindrome (13534443531).

The spelling of 12013212510 in words is "twelve billion, thirteen million, two hundred twelve thousand, five hundred ten".