20121422 has 8 divisors (see below), whose sum is σ = 30481272. Its totient is φ = 9961000.

The previous prime is 20121401. The next prime is 20121427. The reversal of 20121422 is 22412102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20121397 and 20121406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121427) 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, 49604 + ... + 50007.

It is an arithmetic number, because the mean of its divisors is an integer number (3810159).

Almost surely, 2^20121422 is an apocalyptic number.

20121422 is a deficient number, since it is larger than the sum of its proper divisors (10359850).

20121422 is a wasteful number, since it uses less digits than its factorization.

20121422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99714.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20121422 is about 4485.6908052161. The cubic root of 20121422 is about 271.9899704347.

Adding to 20121422 its reverse (22412102), we get a palindrome (42533524).

The spelling of 20121422 in words is "twenty million, one hundred twenty-one thousand, four hundred twenty-two".