21350012411 has 48 divisors (see below), whose sum is σ = 28389009600. Its totient is φ = 15859630080.

The previous prime is 21350012353. The next prime is 21350012413. The reversal of 21350012411 is 11421005312.

It is not a de Polignac number, because 21350012411 - 2²⁶ = 21282903547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21350012413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4860026 + ... + 4864416.

It is an arithmetic number, because the mean of its divisors is an integer number (591437700).

Almost surely, 2^21350012411 is an apocalyptic number.

21350012411 is a deficient number, since it is larger than the sum of its proper divisors (7038997189).

21350012411 is a wasteful number, since it uses less digits than its factorization.

21350012411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884 (or 4877 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 21350012411 its reverse (11421005312), we get a palindrome (32771017723).

The spelling of 21350012411 in words is "twenty-one billion, three hundred fifty million, twelve thousand, four hundred eleven".