221124021113 has 2 divisors, whose sum is σ = 221124021114. Its totient is φ = 221124021112.

The previous prime is 221124021061. The next prime is 221124021119. The reversal of 221124021113 is 311120421122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166551323449 + 54572697664 = 408107^2 + 233608^2 .

It is a cyclic number.

It is not a de Polignac number, because 221124021113 - 2¹⁴ = 221124004729 is a prime.

It is not a weakly prime, because it can be changed into another prime (221124021119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110562010556 + 110562010557.

It is an arithmetic number, because the mean of its divisors is an integer number (110562010557).

Almost surely, 2^221124021113 is an apocalyptic number.

It is an amenable number.

221124021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

221124021113 is an equidigital number, since it uses as much as digits as its factorization.

221124021113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221124021113 its reverse (311120421122), we get a palindrome (532244442235).

The spelling of 221124021113 in words is "two hundred twenty-one billion, one hundred twenty-four million, twenty-one thousand, one hundred thirteen".