21042332124001 has 4 divisors (see below), whose sum is σ = 21101942130372. Its totient is φ = 20982722117632.

The previous prime is 21042332123987. The next prime is 21042332124017. The reversal of 21042332124001 is 10042123324012.

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 5322502773025 + 15719829350976 = 2307055^2 + 3964824^2 .

It is a cyclic number.

It is not a de Polignac number, because 21042332124001 - 2⁹ = 21042332123489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21042332124901) 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, 29805002656 + ... + 29805003361.

It is an arithmetic number, because the mean of its divisors is an integer number (5275485532593).

Almost surely, 2^{21042332124001} is an apocalyptic number.

It is an amenable number.

21042332124001 is a deficient number, since it is larger than the sum of its proper divisors (59610006371).

21042332124001 is an equidigital number, since it uses as much as digits as its factorization.

21042332124001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59610006370.

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

Adding to 21042332124001 its reverse (10042123324012), we get a palindrome (31084455448013).

The spelling of 21042332124001 in words is "twenty-one trillion, forty-two billion, three hundred thirty-two million, one hundred twenty-four thousand, one".