121123211162 has 4 divisors (see below), whose sum is σ = 181684816746. Its totient is φ = 60561605580.

The previous prime is 121123211161. The next prime is 121123211213. The reversal of 121123211162 is 261112321121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 261112321121 = 457 ⋅571361753.

It can be written as a sum of positive squares in only one way, i.e., 117375445201 + 3747765961 = 342601^2 + 61219^2 .

It is not an unprimeable number, because it can be changed into a prime (121123211161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280802789 + ... + 30280802792.

Almost surely, 2^121123211162 is an apocalyptic number.

121123211162 is a deficient number, since it is larger than the sum of its proper divisors (60561605584).

121123211162 is an equidigital number, since it uses as much as digits as its factorization.

121123211162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60561605583.

The product of its digits is 288, while the sum is 23.

Adding to 121123211162 its reverse (261112321121), we get a palindrome (382235532283).

The spelling of 121123211162 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred eleven thousand, one hundred sixty-two".