2201121423 has 12 divisors (see below), whose sum is σ = 3200737800. Its totient is φ = 1457564976.

The previous prime is 2201121383. The next prime is 2201121451. The reversal of 2201121423 is 3241211022.

It is a happy number.

2201121423 is a `hidden beast` number, since 220 + 1 + 1 + 21 + 423 = 666.

It is not a de Polignac number, because 2201121423 - 2¹² = 2201117327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2201121396 and 2201121405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201121523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 819361 + ... + 822042.

It is an arithmetic number, because the mean of its divisors is an integer number (266728150).

Almost surely, 2^2201121423 is an apocalyptic number.

2201121423 is a deficient number, since it is larger than the sum of its proper divisors (999616377).

2201121423 is a wasteful number, since it uses less digits than its factorization.

2201121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641558 (or 1641555 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2201121423 is about 46916.1104845660. The cubic root of 2201121423 is about 1300.8123961563.

Adding to 2201121423 its reverse (3241211022), we get a palindrome (5442332445).

It can be divided in two parts, 22011 and 21423, that added together give a palindrome (43434).

The spelling of 2201121423 in words is "two billion, two hundred one million, one hundred twenty-one thousand, four hundred twenty-three".