221640307430053 has 2 divisors, whose sum is σ = 221640307430054. Its totient is φ = 221640307430052.

The previous prime is 221640307430051. The next prime is 221640307430123. The reversal of 221640307430053 is 350034703046122.

221640307430053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127765562975649 + 93874744454404 = 11303343^2 + 9688898^2 .

It is a cyclic number.

It is not a de Polignac number, because 221640307430053 - 2¹ = 221640307430051 is a prime.

Together with 221640307430051, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 221640307429988 and 221640307430015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221640307430051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110820153715026 + 110820153715027.

It is an arithmetic number, because the mean of its divisors is an integer number (110820153715027).

Almost surely, 2^{221640307430053} is an apocalyptic number.

It is an amenable number.

221640307430053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221640307430053 is an equidigital number, since it uses as much as digits as its factorization.

221640307430053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 221640307430053 in words is "two hundred twenty-one trillion, six hundred forty billion, three hundred seven million, four hundred thirty thousand, fifty-three".