21244214334213 has 128 divisors (see below), whose sum is σ = 34728904949760. Its totient is φ = 12754223089920.

The previous prime is 21244214334199. The next prime is 21244214334281. The reversal of 21244214334213 is 31243341244212.

21244214334213 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 4 + 2 + 1 + 433 + 4 + 213 = 666.

It is not a de Polignac number, because 21244214334213 - 2¹⁷ = 21244214203141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21244214324213) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4277069056 + ... + 4277074022.

It is an arithmetic number, because the mean of its divisors is an integer number (271319569920).

Almost surely, 2^{21244214334213} is an apocalyptic number.

It is an amenable number.

21244214334213 is a deficient number, since it is larger than the sum of its proper divisors (13484690615547).

21244214334213 is a wasteful number, since it uses less digits than its factorization.

21244214334213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6290 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

Adding to 21244214334213 its reverse (31243341244212), we get a palindrome (52487555578425).

The spelling of 21244214334213 in words is "twenty-one trillion, two hundred forty-four billion, two hundred fourteen million, three hundred thirty-four thousand, two hundred thirteen".