12121413240 has 32 divisors (see below), whose sum is σ = 36364240080. Its totient is φ = 3232376832.

The previous prime is 12121413217. The next prime is 12121413263. The reversal of 12121413240 is 4231412121.

It is an interprime number because it is at equal distance from previous prime (12121413217) and next prime (12121413263).

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, 50505769 + ... + 50506008.

Almost surely, 2^12121413240 is an apocalyptic number.

12121413240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121413240 is an abundant number, since it is smaller than the sum of its proper divisors (24242826840).

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

12121413240 is a wasteful number, since it uses less digits than its factorization.

12121413240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101011791 (or 101011787 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12121413240 its reverse (4231412121), we get a palindrome (16352825361).

The spelling of 12121413240 in words is "twelve billion, one hundred twenty-one million, four hundred thirteen thousand, two hundred forty".