21013345413411 has 32 divisors (see below), whose sum is σ = 30691444580160. Its totient is φ = 12709431705600.

The previous prime is 21013345413367. The next prime is 21013345413419. The reversal of 21013345413411 is 11431454331012.

It is a happy number.

It is not a de Polignac number, because 21013345413411 - 2²³ = 21013337024803 is a prime.

It is a super-2 number, since 2×21013345413411² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21013345413419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359710 + ... + 6492771.

It is an arithmetic number, because the mean of its divisors is an integer number (959107643130).

Almost surely, 2^{21013345413411} is an apocalyptic number.

21013345413411 is a deficient number, since it is larger than the sum of its proper divisors (9678099166749).

21013345413411 is a wasteful number, since it uses less digits than its factorization.

21013345413411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853847.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 21013345413411 its reverse (11431454331012), we get a palindrome (32444799744423).

The spelling of 21013345413411 in words is "twenty-one trillion, thirteen billion, three hundred forty-five million, four hundred thirteen thousand, four hundred eleven".