1101110201221 has 2 divisors, whose sum is σ = 1101110201222. Its totient is φ = 1101110201220.

The previous prime is 1101110201197. The next prime is 1101110201239. The reversal of 1101110201221 is 1221020111011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098536668321 + 2573532900 = 1048111^2 + 50730^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101110201221 - 2¹⁵ = 1101110168453 is a prime.

It is a super-2 number, since 2×1101110201221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101110201021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550555100610 + 550555100611.

It is an arithmetic number, because the mean of its divisors is an integer number (550555100611).

Almost surely, 2^{1101110201221} is an apocalyptic number.

It is an amenable number.

1101110201221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101110201221 is an equidigital number, since it uses as much as digits as its factorization.

1101110201221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1101110201221 its reverse (1221020111011), we get a palindrome (2322130312232).

The spelling of 1101110201221 in words is "one trillion, one hundred one billion, one hundred ten million, two hundred one thousand, two hundred twenty-one".