21050015314120 has 32 divisors (see below), whose sum is σ = 51005806339320. Its totient is φ = 7772313346560.

The previous prime is 21050015314063. The next prime is 21050015314129. The reversal of 21050015314120 is 2141351005012.

It can be written as a sum of positive squares in 4 ways, for example, as 15854524187076 + 5195491127044 = 3981774^2 + 2279362^2 .

It is not an unprimeable number, because it can be changed into a prime (21050015314129) 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, 20240398821 + ... + 20240399860.

Almost surely, 2^{21050015314120} is an apocalyptic number.

21050015314120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21050015314120 is an abundant number, since it is smaller than the sum of its proper divisors (29955791025200).

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

21050015314120 is a wasteful number, since it uses less digits than its factorization.

21050015314120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40480798705 (or 40480798701 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 21050015314120 its reverse (2141351005012), we get a palindrome (23191366319132).

The spelling of 21050015314120 in words is "twenty-one trillion, fifty billion, fifteen million, three hundred fourteen thousand, one hundred twenty".