10220404421 has 4 divisors (see below), whose sum is σ = 10221402912. Its totient is φ = 10219405932.

The previous prime is 10220404417. The next prime is 10220404427. The reversal of 10220404421 is 12440402201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10220404421 - 2² = 10220404417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220404393 and 10220404402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220404427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483731 + ... + 504416.

It is an arithmetic number, because the mean of its divisors is an integer number (2555350728).

Almost surely, 2^10220404421 is an apocalyptic number.

It is an amenable number.

10220404421 is a deficient number, since it is larger than the sum of its proper divisors (998491).

10220404421 is an equidigital number, since it uses as much as digits as its factorization.

10220404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998490.

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

Adding to 10220404421 its reverse (12440402201), we get a palindrome (22660806622).

The spelling of 10220404421 in words is "ten billion, two hundred twenty million, four hundred four thousand, four hundred twenty-one".