20421461222 has 8 divisors (see below), whose sum is σ = 31688474400. Its totient is φ = 9858636424.

The previous prime is 20421461201. The next prime is 20421461239. The reversal of 20421461222 is 22216412402.

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 = 20421461191 and 20421461200.

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, 176047022 + ... + 176047137.

It is an arithmetic number, because the mean of its divisors is an integer number (3961059300).

Almost surely, 2^20421461222 is an apocalyptic number.

20421461222 is a deficient number, since it is larger than the sum of its proper divisors (11267013178).

20421461222 is a wasteful number, since it uses less digits than its factorization.

20421461222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352094190.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20421461222 its reverse (22216412402), we get a palindrome (42637873624).

The spelling of 20421461222 in words is "twenty billion, four hundred twenty-one million, four hundred sixty-one thousand, two hundred twenty-two".