121422223 has 4 divisors (see below), whose sum is σ = 130762408. Its totient is φ = 112082040.

The previous prime is 121422187. The next prime is 121422233. The reversal of 121422223 is 322224121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322224121 = 2081 ⋅154841.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121422223 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 121422223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121422233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4670073 + ... + 4670098.

It is an arithmetic number, because the mean of its divisors is an integer number (32690602).

Almost surely, 2^121422223 is an apocalyptic number.

121422223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121422223 is a deficient number, since it is larger than the sum of its proper divisors (9340185).

121422223 is an equidigital number, since it uses as much as digits as its factorization.

121422223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340184.

The product of its digits is 384, while the sum is 19.

The square root of 121422223 is about 11019.1752413690. The cubic root of 121422223 is about 495.1833800033.

Adding to 121422223 its reverse (322224121), we get a palindrome (443646344).

It can be divided in two parts, 12142 and 2223, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 121422223 in words is "one hundred twenty-one million, four hundred twenty-two thousand, two hundred twenty-three".