1101122021173 has 2 divisors, whose sum is σ = 1101122021174. Its totient is φ = 1101122021172.

The previous prime is 1101122021161. The next prime is 1101122021203. The reversal of 1101122021173 is 3711202211011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099733937124 + 1388084049 = 1048682^2 + 37257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101122021173 - 2²⁹ = 1100585150261 is a prime.

It is a super-2 number, since 2×1101122021173² (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 (1101122001173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550561010586 + 550561010587.

It is an arithmetic number, because the mean of its divisors is an integer number (550561010587).

Almost surely, 2^{1101122021173} is an apocalyptic number.

It is an amenable number.

1101122021173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101122021173 is an equidigital number, since it uses as much as digits as its factorization.

1101122021173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 22.

Adding to 1101122021173 its reverse (3711202211011), we get a palindrome (4812324232184).

The spelling of 1101122021173 in words is "one trillion, one hundred one billion, one hundred twenty-two million, twenty-one thousand, one hundred seventy-three".