21200220110053 has 2 divisors, whose sum is σ = 21200220110054. Its totient is φ = 21200220110052.

The previous prime is 21200220109969. The next prime is 21200220110089. The reversal of 21200220110053 is 35001102200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17685708771844 + 3514511338209 = 4205438^2 + 1874703^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200220110053 - 2²¹ = 21200218012901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21200220110053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200220110753) 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, 10600110055026 + 10600110055027.

It is an arithmetic number, because the mean of its divisors is an integer number (10600110055027).

Almost surely, 2^{21200220110053} is an apocalyptic number.

It is an amenable number.

21200220110053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200220110053 is an equidigital number, since it uses as much as digits as its factorization.

21200220110053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21200220110053 its reverse (35001102200212), we get a palindrome (56201322310265).

The spelling of 21200220110053 in words is "twenty-one trillion, two hundred billion, two hundred twenty million, one hundred ten thousand, fifty-three".