21120100202213 has 2 divisors, whose sum is σ = 21120100202214. Its totient is φ = 21120100202212.

The previous prime is 21120100202203. The next prime is 21120100202221. The reversal of 21120100202213 is 31220200102112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20792295860449 + 327804341764 = 4559857^2 + 572542^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120100202213 - 2¹² = 21120100198117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21120100202191 and 21120100202200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120100202203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560050101106 + 10560050101107.

It is an arithmetic number, because the mean of its divisors is an integer number (10560050101107).

Almost surely, 2^{21120100202213} is an apocalyptic number.

It is an amenable number.

21120100202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120100202213 is an equidigital number, since it uses as much as digits as its factorization.

21120100202213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21120100202213 its reverse (31220200102112), we get a palindrome (52340300304325).

The spelling of 21120100202213 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, two hundred two thousand, two hundred thirteen".