21313210111011 has 48 divisors (see below), whose sum is σ = 38914209507264. Its totient is φ = 10938291363072.

The previous prime is 21313210111003. The next prime is 21313210111013. The reversal of 21313210111011 is 11011101231312.

21313210111011 is a `hidden beast` number, since 21 + 313 + 210 + 1 + 110 + 11 = 666.

It is not a de Polignac number, because 21313210111011 - 2³ = 21313210111003 is a prime.

It is a super-2 number, since 2×21313210111011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21313210111013) 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, 351638016 + ... + 351698621.

It is an arithmetic number, because the mean of its divisors is an integer number (810712698068).

Almost surely, 2^{21313210111011} is an apocalyptic number.

21313210111011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21313210111011 is a deficient number, since it is larger than the sum of its proper divisors (17600999396253).

21313210111011 is a wasteful number, since it uses less digits than its factorization.

21313210111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703336700 (or 703336697 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 21313210111011 its reverse (11011101231312), we get a palindrome (32324311342323).

The spelling of 21313210111011 in words is "twenty-one trillion, three hundred thirteen billion, two hundred ten million, one hundred eleven thousand, eleven".