21213113011332 has 96 divisors (see below), whose sum is σ = 54445033488384. Its totient is φ = 6374923027200.

The previous prime is 21213113011301. The next prime is 21213113011367. The reversal of 21213113011332 is 23311031131212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39851857 + ... + 40380647.

It is an arithmetic number, because the mean of its divisors is an integer number (567135765504).

Almost surely, 2^{21213113011332} is an apocalyptic number.

21213113011332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21213113011332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27222516744192).

21213113011332 is an abundant number, since it is smaller than the sum of its proper divisors (33231920477052).

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

21213113011332 is a wasteful number, since it uses less digits than its factorization.

21213113011332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531329 (or 531327 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 21213113011332 its reverse (23311031131212), we get a palindrome (44524144142544).

The spelling of 21213113011332 in words is "twenty-one trillion, two hundred thirteen billion, one hundred thirteen million, eleven thousand, three hundred thirty-two".