21113343513354 has 32 divisors (see below), whose sum is σ = 44538220800000. Its totient is φ = 6654010151664.

The previous prime is 21113343513349. The next prime is 21113343513433. The reversal of 21113343513354 is 45331534331112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185519034 + ... + 185632805.

It is an arithmetic number, because the mean of its divisors is an integer number (1391819400000).

Almost surely, 2^{21113343513354} is an apocalyptic number.

21113343513354 is an abundant number, since it is smaller than the sum of its proper divisors (23424877286646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113343513354 is a wasteful number, since it uses less digits than its factorization.

21113343513354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371152362.

The product of its digits is 194400, while the sum is 39.

Adding to 21113343513354 its reverse (45331534331112), we get a palindrome (66444877844466).

The spelling of 21113343513354 in words is "twenty-one trillion, one hundred thirteen billion, three hundred forty-three million, five hundred thirteen thousand, three hundred fifty-four".