21500120754314 has 16 divisors (see below), whose sum is σ = 32279780074752. Its totient is φ = 10740198557088.

The previous prime is 21500120754313. The next prime is 21500120754341. The reversal of 21500120754314 is 41345702100512.

It is a super-3 number, since 3×21500120754314³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21500120754311) 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, 8464967 + ... + 10707749.

It is an arithmetic number, because the mean of its divisors is an integer number (2017486254672).

Almost surely, 2^{21500120754314} is an apocalyptic number.

21500120754314 is a deficient number, since it is larger than the sum of its proper divisors (10779659320438).

21500120754314 is a wasteful number, since it uses less digits than its factorization.

21500120754314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247181.

The product of its (nonzero) digits is 33600, while the sum is 35.

Adding to 21500120754314 its reverse (41345702100512), we get a palindrome (62845822854826).

The spelling of 21500120754314 in words is "twenty-one trillion, five hundred billion, one hundred twenty million, seven hundred fifty-four thousand, three hundred fourteen".