10220422421 has 24 divisors (see below), whose sum is σ = 11553383352. Its totient is φ = 9027849600.

The previous prime is 10220422417. The next prime is 10220422447. The reversal of 10220422421 is 12422402201.

It can be written as a sum of positive squares in 4 ways, for example, as 6853521796 + 3366900625 = 82786^2 + 58025^2 .

It is not a de Polignac number, because 10220422421 - 2² = 10220422417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220422393 and 10220422402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220422021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5286371 + ... + 5288303.

It is an arithmetic number, because the mean of its divisors is an integer number (481390973).

Almost surely, 2^10220422421 is an apocalyptic number.

10220422421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10220422421 is a deficient number, since it is larger than the sum of its proper divisors (1332960931).

10220422421 is a wasteful number, since it uses less digits than its factorization.

10220422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173 (or 3162 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10220422421 its reverse (12422402201), we get a palindrome (22642824622).

The spelling of 10220422421 in words is "ten billion, two hundred twenty million, four hundred twenty-two thousand, four hundred twenty-one".