21011241410231 has 4 divisors (see below), whose sum is σ = 21011258957472. Its totient is φ = 21011223862992.

The previous prime is 21011241410227. The next prime is 21011241410261. The reversal of 21011241410231 is 13201414211012.

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

It is a cyclic number.

It is not a de Polignac number, because 21011241410231 - 2² = 21011241410227 is a prime.

It is a super-2 number, since 2×21011241410231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21011241410197 and 21011241410206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21011241410261) 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, 6834671 + ... + 9419936.

It is an arithmetic number, because the mean of its divisors is an integer number (5252814739368).

Almost surely, 2^{21011241410231} is an apocalyptic number.

21011241410231 is a deficient number, since it is larger than the sum of its proper divisors (17547241).

21011241410231 is a wasteful number, since it uses less digits than its factorization.

21011241410231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17547240.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 21011241410231 its reverse (13201414211012), we get a palindrome (34212655621243).

The spelling of 21011241410231 in words is "twenty-one trillion, eleven billion, two hundred forty-one million, four hundred ten thousand, two hundred thirty-one".