1161122021223 has 16 divisors (see below), whose sum is σ = 1602351441120. Its totient is φ = 747013768704.

The previous prime is 1161122021209. The next prime is 1161122021237. The reversal of 1161122021223 is 3221202211611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1161122021209) and next prime (1161122021237).

It is not a de Polignac number, because 1161122021223 - 2⁹ = 1161122020711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1161122021193 and 1161122021202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161122021623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3174886 + ... + 3521667.

It is an arithmetic number, because the mean of its divisors is an integer number (100146965070).

Almost surely, 2^{1161122021223} is an apocalyptic number.

1161122021223 is a deficient number, since it is larger than the sum of its proper divisors (441229419897).

1161122021223 is a wasteful number, since it uses less digits than its factorization.

1161122021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6698578.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 1161122021223 its reverse (3221202211611), we get a palindrome (4382324232834).

The spelling of 1161122021223 in words is "one trillion, one hundred sixty-one billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-three".