2220121423 has 8 divisors (see below), whose sum is σ = 2449215216. Its totient is φ = 1999358400.

The previous prime is 2220121381. The next prime is 2220121439. The reversal of 2220121423 is 3241210222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2220121423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220121423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220122423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2082133 + ... + 2083198.

It is an arithmetic number, because the mean of its divisors is an integer number (306151902).

Almost surely, 2^2220121423 is an apocalyptic number.

2220121423 is a deficient number, since it is larger than the sum of its proper divisors (229093793).

2220121423 is a wasteful number, since it uses less digits than its factorization.

2220121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165385.

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

The square root of 2220121423 is about 47118.1644697669. The cubic root of 2220121423 is about 1304.5445331939.

Adding to 2220121423 its reverse (3241210222), we get a palindrome (5461331645).

The spelling of 2220121423 in words is "two billion, two hundred twenty million, one hundred twenty-one thousand, four hundred twenty-three".