21442010034013 has 4 divisors (see below), whose sum is σ = 21478168567548. Its totient is φ = 21405851500480.

The previous prime is 21442010033999. The next prime is 21442010034031. The reversal of 21442010034013 is 31043001024412.

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 19041162049924 + 2400847984089 = 4363618^2 + 1549467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21442010034013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442010634013) 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, 18079265878 + ... + 18079267063.

It is an arithmetic number, because the mean of its divisors is an integer number (5369542141887).

Almost surely, 2^{21442010034013} is an apocalyptic number.

It is an amenable number.

21442010034013 is a deficient number, since it is larger than the sum of its proper divisors (36158533535).

21442010034013 is an equidigital number, since it uses as much as digits as its factorization.

21442010034013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36158533534.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21442010034013 its reverse (31043001024412), we get a palindrome (52485011058425).

The spelling of 21442010034013 in words is "twenty-one trillion, four hundred forty-two billion, ten million, thirty-four thousand, thirteen".