10021224421 has 16 divisors (see below), whose sum is σ = 10931868864. Its totient is φ = 9131169024.

The previous prime is 10021224377. The next prime is 10021224457. The reversal of 10021224421 is 12442212001.

It is a cyclic number.

It is not a de Polignac number, because 10021224421 - 2⁹ = 10021223909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021254421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380925 + ... + 406381.

It is an arithmetic number, because the mean of its divisors is an integer number (683241804).

Almost surely, 2^10021224421 is an apocalyptic number.

It is an amenable number.

10021224421 is a deficient number, since it is larger than the sum of its proper divisors (910644443).

10021224421 is a wasteful number, since it uses less digits than its factorization.

10021224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25860.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10021224421 its reverse (12442212001), we get a palindrome (22463436422).

The spelling of 10021224421 in words is "ten billion, twenty-one million, two hundred twenty-four thousand, four hundred twenty-one".