1100332155401 has 2 divisors, whose sum is σ = 1100332155402. Its totient is φ = 1100332155400.

The previous prime is 1100332155389. The next prime is 1100332155407. The reversal of 1100332155401 is 1045512330011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080558171001 + 19773984400 = 1039499^2 + 140620^2 .

It is an emirp because it is prime and its reverse (1045512330011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100332155401 - 2²² = 1100327961097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1100332155407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550166077700 + 550166077701.

It is an arithmetic number, because the mean of its divisors is an integer number (550166077701).

Almost surely, 2^{1100332155401} is an apocalyptic number.

It is an amenable number.

1100332155401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100332155401 is an equidigital number, since it uses as much as digits as its factorization.

1100332155401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1100332155401 its reverse (1045512330011), we get a palindrome (2145844485412).

The spelling of 1100332155401 in words is "one trillion, one hundred billion, three hundred thirty-two million, one hundred fifty-five thousand, four hundred one".