53113109221 has 2 divisors, whose sum is σ = 53113109222. Its totient is φ = 53113109220.

The previous prime is 53113109149. The next prime is 53113109227. The reversal of 53113109221 is 12290131135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53097984900 + 15124321 = 230430^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 53113109221 - 2⁹ = 53113108709 is a prime.

It is a super-2 number, since 2×53113109221² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53113109221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53113109227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26556554610 + 26556554611.

It is an arithmetic number, because the mean of its divisors is an integer number (26556554611).

Almost surely, 2^53113109221 is an apocalyptic number.

It is an amenable number.

53113109221 is a deficient number, since it is larger than the sum of its proper divisors (1).

53113109221 is an equidigital number, since it uses as much as digits as its factorization.

53113109221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The spelling of 53113109221 in words is "fifty-three billion, one hundred thirteen million, one hundred nine thousand, two hundred twenty-one".