223743921061 has 2 divisors, whose sum is σ = 223743921062. Its totient is φ = 223743921060.

The previous prime is 223743921031. The next prime is 223743921077. The reversal of 223743921061 is 160129347322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218678752161 + 5065168900 = 467631^2 + 71170^2 .

It is a cyclic number.

It is not a de Polignac number, because 223743921061 - 2¹⁵ = 223743888293 is a prime.

It is a super-2 number, since 2×223743921061² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223743921031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111871960530 + 111871960531.

It is an arithmetic number, because the mean of its divisors is an integer number (111871960531).

Almost surely, 2^223743921061 is an apocalyptic number.

It is an amenable number.

223743921061 is a deficient number, since it is larger than the sum of its proper divisors (1).

223743921061 is an equidigital number, since it uses as much as digits as its factorization.

223743921061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 223743921061 in words is "two hundred twenty-three billion, seven hundred forty-three million, nine hundred twenty-one thousand, sixty-one".