12351001421 has 8 divisors (see below), whose sum is σ = 13523541888. Its totient is φ = 11186748000.

The previous prime is 12351001379. The next prime is 12351001447. The reversal of 12351001421 is 12410015321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12351001421 - 2¹⁴ = 12350985037 is a prime.

It is a super-3 number, since 3×12351001421³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12351001393 and 12351001402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351001451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068640 + ... + 2074601.

It is an arithmetic number, because the mean of its divisors is an integer number (1690442736).

Almost surely, 2^12351001421 is an apocalyptic number.

12351001421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12351001421 is a deficient number, since it is larger than the sum of its proper divisors (1172540467).

12351001421 is a wasteful number, since it uses less digits than its factorization.

12351001421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143523.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 12351001421 its reverse (12410015321), we get a palindrome (24761016742).

The spelling of 12351001421 in words is "twelve billion, three hundred fifty-one million, one thousand, four hundred twenty-one".