21220140233324 has 12 divisors (see below), whose sum is σ = 37188986723448. Its totient is φ = 10594715455200.

The previous prime is 21220140233323. The next prime is 21220140233353. The reversal of 21220140233324 is 42333204102212.

It is not an unprimeable number, because it can be changed into a prime (21220140233323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3838662257 + ... + 3838667784.

It is an arithmetic number, because the mean of its divisors is an integer number (3099082226954).

Almost surely, 2^{21220140233324} is an apocalyptic number.

It is an amenable number.

21220140233324 is a deficient number, since it is larger than the sum of its proper divisors (15968846490124).

21220140233324 is a wasteful number, since it uses less digits than its factorization.

21220140233324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7677330736 (or 7677330734 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21220140233324 its reverse (42333204102212), we get a palindrome (63553344335536).

The spelling of 21220140233324 in words is "twenty-one trillion, two hundred twenty billion, one hundred forty million, two hundred thirty-three thousand, three hundred twenty-four".