20421241222 has 8 divisors (see below), whose sum is σ = 30632988672. Its totient is φ = 10210245000.

The previous prime is 20421241213. The next prime is 20421241223. The reversal of 20421241222 is 22214212402.

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

It is a super-2 number, since 2×20421241222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20421241193 and 20421241202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421241223) 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, 114054 + ... + 232057.

It is an arithmetic number, because the mean of its divisors is an integer number (3829123584).

Almost surely, 2^20421241222 is an apocalyptic number.

20421241222 is a deficient number, since it is larger than the sum of its proper divisors (10211747450).

20421241222 is a wasteful number, since it uses less digits than its factorization.

20421241222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375614.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20421241222 its reverse (22214212402), we get a palindrome (42635453624).

The spelling of 20421241222 in words is "twenty billion, four hundred twenty-one million, two hundred forty-one thousand, two hundred twenty-two".