1423121121 has 24 divisors (see below), whose sum is σ = 2114399040. Its totient is φ = 921697056.

The previous prime is 1423121099. The next prime is 1423121137. The reversal of 1423121121 is 1211213241.

1423121121 is a `hidden beast` number, since 1 + 423 + 121 + 121 = 666.

It is not a de Polignac number, because 1423121121 - 2¹¹ = 1423119073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1423121094 and 1423121103.

It is not an unprimeable number, because it can be changed into a prime (1423121171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243196 + ... + 248978.

It is an arithmetic number, because the mean of its divisors is an integer number (88099960).

Almost surely, 2^1423121121 is an apocalyptic number.

It is an amenable number.

1423121121 is a deficient number, since it is larger than the sum of its proper divisors (691277919).

1423121121 is a wasteful number, since it uses less digits than its factorization.

1423121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565 (or 6562 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1423121121 is about 37724.2776073976. The cubic root of 1423121121 is about 1124.8137623563.

Adding to 1423121121 its reverse (1211213241), we get a palindrome (2634334362).

The spelling of 1423121121 in words is "one billion, four hundred twenty-three million, one hundred twenty-one thousand, one hundred twenty-one".