23121520041420 has 36 divisors (see below), whose sum is σ = 70135277459520. Its totient is φ = 6165738677664.

The previous prime is 23121520041419. The next prime is 23121520041443. The reversal of 23121520041420 is 2414002512132.

23121520041420 is a `hidden beast` number, since 2 + 3 + 1 + 21 + 5 + 200 + 414 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64226444380 + ... + 64226444739.

Almost surely, 2^{23121520041420} is an apocalyptic number.

23121520041420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121520041420 is an abundant number, since it is smaller than the sum of its proper divisors (47013757418100).

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

23121520041420 is a wasteful number, since it uses less digits than its factorization.

23121520041420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128452889134 (or 128452889129 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 23121520041420 its reverse (2414002512132), we get a palindrome (25535522553552).

The spelling of 23121520041420 in words is "twenty-three trillion, one hundred twenty-one billion, five hundred twenty million, forty-one thousand, four hundred twenty".