1113401231221 has 2 divisors, whose sum is σ = 1113401231222. Its totient is φ = 1113401231220.

The previous prime is 1113401231183. The next prime is 1113401231249. The reversal of 1113401231221 is 1221321043111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1112824559025 + 576672196 = 1054905^2 + 24014^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113401231221 - 2⁷ = 1113401231093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1113401231192 and 1113401231201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113401231521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556700615610 + 556700615611.

It is an arithmetic number, because the mean of its divisors is an integer number (556700615611).

Almost surely, 2^{1113401231221} is an apocalyptic number.

It is an amenable number.

1113401231221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113401231221 is an equidigital number, since it uses as much as digits as its factorization.

1113401231221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1113401231221 its reverse (1221321043111), we get a palindrome (2334722274332).

The spelling of 1113401231221 in words is "one trillion, one hundred thirteen billion, four hundred one million, two hundred thirty-one thousand, two hundred twenty-one".