2121201422 has 16 divisors (see below), whose sum is σ = 3224430720. Its totient is φ = 1046476032.

The previous prime is 2121201421. The next prime is 2121201431. The reversal of 2121201422 is 2241021212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121201422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121201421) 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, 29354 + ... + 71442.

It is an arithmetic number, because the mean of its divisors is an integer number (201526920).

Almost surely, 2^2121201422 is an apocalyptic number.

2121201422 is a deficient number, since it is larger than the sum of its proper divisors (1103229298).

2121201422 is a wasteful number, since it uses less digits than its factorization.

2121201422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42427.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2121201422 is about 46056.5024942190. The cubic root of 2121201422 is about 1284.8742824416.

Adding to 2121201422 its reverse (2241021212), we get a palindrome (4362222634).

The spelling of 2121201422 in words is "two billion, one hundred twenty-one million, two hundred one thousand, four hundred twenty-two".