1101133231021 has 2 divisors, whose sum is σ = 1101133231022. Its totient is φ = 1101133231020.

The previous prime is 1101133231007. The next prime is 1101133231027. The reversal of 1101133231021 is 1201323311011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038024757225 + 63108473796 = 1018835^2 + 251214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101133231021 - 2²⁹ = 1100596360109 is a prime.

It is a super-3 number, since 3×1101133231021³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101133231021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101133231027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550566615510 + 550566615511.

It is an arithmetic number, because the mean of its divisors is an integer number (550566615511).

Almost surely, 2^{1101133231021} is an apocalyptic number.

It is an amenable number.

1101133231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101133231021 is an equidigital number, since it uses as much as digits as its factorization.

1101133231021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1101133231021 its reverse (1201323311011), we get a palindrome (2302456542032).

The spelling of 1101133231021 in words is "one trillion, one hundred one billion, one hundred thirty-three million, two hundred thirty-one thousand, twenty-one".