223101220981 has 2 divisors, whose sum is σ = 223101220982. Its totient is φ = 223101220980.

The previous prime is 223101220933. The next prime is 223101220987. The reversal of 223101220981 is 189022101322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147660358756 + 75440862225 = 384266^2 + 274665^2 .

It is a cyclic number.

It is not a de Polignac number, because 223101220981 - 2⁹ = 223101220469 is a prime.

It is a super-3 number, since 3×223101220981³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223101220987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111550610490 + 111550610491.

It is an arithmetic number, because the mean of its divisors is an integer number (111550610491).

Almost surely, 2^223101220981 is an apocalyptic number.

It is an amenable number.

223101220981 is a deficient number, since it is larger than the sum of its proper divisors (1).

223101220981 is an equidigital number, since it uses as much as digits as its factorization.

223101220981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 223101220981 in words is "two hundred twenty-three billion, one hundred one million, two hundred twenty thousand, nine hundred eighty-one".