21114053329081 has 4 divisors (see below), whose sum is σ = 21117091766500. Its totient is φ = 21111014891664.

The previous prime is 21114053329063. The next prime is 21114053329121. The reversal of 21114053329081 is 18092335041112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16505693798400 + 4608359530681 = 4062720^2 + 2146709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21114053329081 is a prime.

It is a super-2 number, since 2×21114053329081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114053359081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1519208286 + ... + 1519222183.

It is an arithmetic number, because the mean of its divisors is an integer number (5279272941625).

Almost surely, 2^{21114053329081} is an apocalyptic number.

It is an amenable number.

21114053329081 is a deficient number, since it is larger than the sum of its proper divisors (3038437419).

21114053329081 is an equidigital number, since it uses as much as digits as its factorization.

21114053329081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038437418.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 21114053329081 in words is "twenty-one trillion, one hundred fourteen billion, fifty-three million, three hundred twenty-nine thousand, eighty-one".