1100213023121 has 2 divisors, whose sum is σ = 1100213023122. Its totient is φ = 1100213023120.

The previous prime is 1100213023097. The next prime is 1100213023127. The reversal of 1100213023121 is 1213203120011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972166420225 + 128046602896 = 985985^2 + 357836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100213023121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100213023121.

It is not a weakly prime, because it can be changed into another prime (1100213023127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550106511560 + 550106511561.

It is an arithmetic number, because the mean of its divisors is an integer number (550106511561).

Almost surely, 2^{1100213023121} is an apocalyptic number.

It is an amenable number.

1100213023121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100213023121 is an equidigital number, since it uses as much as digits as its factorization.

1100213023121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1100213023121 its reverse (1213203120011), we get a palindrome (2313416143132).

The spelling of 1100213023121 in words is "one trillion, one hundred billion, two hundred thirteen million, twenty-three thousand, one hundred twenty-one".