21241001313101 has 4 divisors (see below), whose sum is σ = 21242320891932. Its totient is φ = 21239681734272.

The previous prime is 21241001313079. The next prime is 21241001313107. The reversal of 21241001313101 is 10131310014212.

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 16029373468900 + 5211627844201 = 4003670^2 + 2282899^2 .

It is a cyclic number.

It is not a de Polignac number, because 21241001313101 - 2¹⁰ = 21241001312077 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 (21241001313107) 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, 659765270 + ... + 659797463.

It is an arithmetic number, because the mean of its divisors is an integer number (5310580222983).

Almost surely, 2^{21241001313101} is an apocalyptic number.

It is an amenable number.

21241001313101 is a deficient number, since it is larger than the sum of its proper divisors (1319578831).

21241001313101 is a wasteful number, since it uses less digits than its factorization.

21241001313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319578830.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21241001313101 its reverse (10131310014212), we get a palindrome (31372311327313).

The spelling of 21241001313101 in words is "twenty-one trillion, two hundred forty-one billion, one million, three hundred thirteen thousand, one hundred one".