21501024413342 has 8 divisors (see below), whose sum is σ = 32252086872432. Its totient is φ = 10750328789200.

The previous prime is 21501024413293. The next prime is 21501024413353. The reversal of 21501024413342 is 24331442010512.

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

It is a junction number, because it is equal to n+sod(n) for n = 21501024413299 and 21501024413308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91562159 + ... + 91796682.

It is an arithmetic number, because the mean of its divisors is an integer number (4031510859054).

Almost surely, 2^{21501024413342} is an apocalyptic number.

21501024413342 is a deficient number, since it is larger than the sum of its proper divisors (10751062459090).

21501024413342 is a wasteful number, since it uses less digits than its factorization.

21501024413342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183417474.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 21501024413342 its reverse (24331442010512), we get a palindrome (45832466423854).

The spelling of 21501024413342 in words is "twenty-one trillion, five hundred one billion, twenty-four million, four hundred thirteen thousand, three hundred forty-two".