20212242 has 8 divisors (see below), whose sum is σ = 40424496. Its totient is φ = 6737412.

The previous prime is 20212223. The next prime is 20212259. The reversal of 20212242 is 24221202.

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

20212242 is an admirable 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, 1684348 + ... + 1684359.

It is an arithmetic number, because the mean of its divisors is an integer number (5053062).

Almost surely, 2^20212242 is an apocalyptic number.

20212242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20212242 is a wasteful number, since it uses less digits than its factorization.

20212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368712.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20212242 is about 4495.8027091944. The cubic root of 20212242 is about 272.3985740425.

Adding to 20212242 its reverse (24221202), we get a palindrome (44433444).

The spelling of 20212242 in words is "twenty million, two hundred twelve thousand, two hundred forty-two".