21220201133413 has 2 divisors, whose sum is σ = 21220201133414. Its totient is φ = 21220201133412.

The previous prime is 21220201133377. The next prime is 21220201133459. The reversal of 21220201133413 is 31433110202212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16937776495809 + 4282424637604 = 4115553^2 + 2069402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21220201133413 is a prime.

It is a super-2 number, since 2×21220201133413² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21221201133413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610100566706 + 10610100566707.

It is an arithmetic number, because the mean of its divisors is an integer number (10610100566707).

Almost surely, 2^{21220201133413} is an apocalyptic number.

It is an amenable number.

21220201133413 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220201133413 is an equidigital number, since it uses as much as digits as its factorization.

21220201133413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21220201133413 its reverse (31433110202212), we get a palindrome (52653311335625).

The spelling of 21220201133413 in words is "twenty-one trillion, two hundred twenty billion, two hundred one million, one hundred thirty-three thousand, four hundred thirteen".