2340121232421 has 48 divisors (see below), whose sum is σ = 3988067319808. Its totient is φ = 1293947978400.

The previous prime is 2340121232413. The next prime is 2340121232443. The reversal of 2340121232421 is 1242321210432.

2340121232421 is a `hidden beast` number, since 2 + 3 + 4 + 0 + 1 + 2 + 1 + 232 + 421 = 666.

It is not a de Polignac number, because 2340121232421 - 2³ = 2340121232413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340121232521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21685020 + ... + 21792666.

Almost surely, 2^{2340121232421} is an apocalyptic number.

2340121232421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2340121232421 is a deficient number, since it is larger than the sum of its proper divisors (1647946087387).

2340121232421 is a wasteful number, since it uses less digits than its factorization.

2340121232421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118822 (or 118819 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 2340121232421 its reverse (1242321210432), we get a palindrome (3582442442853).

The spelling of 2340121232421 in words is "two trillion, three hundred forty billion, one hundred twenty-one million, two hundred thirty-two thousand, four hundred twenty-one".