21014131241 has 8 divisors (see below), whose sum is σ = 21592242504. Its totient is φ = 20436554880.

The previous prime is 21014131213. The next prime is 21014131331. The reversal of 21014131241 is 14213141012.

It can be written as a sum of positive squares in 4 ways, for example, as 8803881241 + 12210250000 = 93829^2 + 110500^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21014131241 - 2²⁶ = 20947022377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21014131211) 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, 53420 + ... + 211853.

It is an arithmetic number, because the mean of its divisors is an integer number (2699030313).

Almost surely, 2^21014131241 is an apocalyptic number.

It is an amenable number.

21014131241 is a deficient number, since it is larger than the sum of its proper divisors (578111263).

21014131241 is a wasteful number, since it uses less digits than its factorization.

21014131241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267451.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21014131241 its reverse (14213141012), we get a palindrome (35227272253).

The spelling of 21014131241 in words is "twenty-one billion, fourteen million, one hundred thirty-one thousand, two hundred forty-one".