10421022021 has 12 divisors (see below), whose sum is σ = 14161818048. Its totient is φ = 6816260464.

The previous prime is 10421022011. The next prime is 10421022043. The reversal of 10421022021 is 12022012401.

It is not a de Polignac number, because 10421022021 - 2⁹ = 10421021509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421022011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609885 + ... + 626738.

It is an arithmetic number, because the mean of its divisors is an integer number (1180151504).

Almost surely, 2^10421022021 is an apocalyptic number.

It is an amenable number.

10421022021 is a deficient number, since it is larger than the sum of its proper divisors (3740796027).

10421022021 is an equidigital number, since it uses as much as digits as its factorization.

10421022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236732 (or 1236679 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10421022021 its reverse (12022012401), we get a palindrome (22443034422).

The spelling of 10421022021 in words is "ten billion, four hundred twenty-one million, twenty-two thousand, twenty-one".