20213422 has 8 divisors (see below), whose sum is σ = 30383856. Its totient is φ = 10085472.

The previous prime is 20213419. The next prime is 20213437. The reversal of 20213422 is 22431202.

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 = 20213396 and 20213405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9403 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (3797982).

Almost surely, 2^20213422 is an apocalyptic number.

20213422 is a deficient number, since it is larger than the sum of its proper divisors (10170434).

20213422 is a wasteful number, since it uses less digits than its factorization.

20213422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21242.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20213422 is about 4495.9339407958. The cubic root of 20213422 is about 272.4038748575.

Adding to 20213422 its reverse (22431202), we get a palindrome (42644624).

The spelling of 20213422 in words is "twenty million, two hundred thirteen thousand, four hundred twenty-two".