10221400424021 has 4 divisors (see below), whose sum is σ = 10282606414752. Its totient is φ = 10160194433292.

The previous prime is 10221400423987. The next prime is 10221400424033. The reversal of 10221400424021 is 12042400412201.

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 10221400424021 - 2¹⁰ = 10221400422997 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 (10221400424051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30602995115 + ... + 30602995448.

It is an arithmetic number, because the mean of its divisors is an integer number (2570651603688).

Almost surely, 2^{10221400424021} is an apocalyptic number.

It is an amenable number.

10221400424021 is a deficient number, since it is larger than the sum of its proper divisors (61205990731).

10221400424021 is an equidigital number, since it uses as much as digits as its factorization.

10221400424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61205990730.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 10221400424021 its reverse (12042400412201), we get a palindrome (22263800836222).

The spelling of 10221400424021 in words is "ten trillion, two hundred twenty-one billion, four hundred million, four hundred twenty-four thousand, twenty-one".