10221404643 has 6 divisors (see below), whose sum is σ = 14764251164. Its totient is φ = 6814269756.

The previous prime is 10221404621. The next prime is 10221404647. The reversal of 10221404643 is 34640412201.

It is a happy number.

10221404643 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 14 + 0 + 4 + 643 = 666.

It is not a de Polignac number, because 10221404643 - 2⁶ = 10221404579 is a prime.

It is a super-2 number, since 2×10221404643² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221404647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 567855805 + ... + 567855822.

Almost surely, 2^10221404643 is an apocalyptic number.

10221404643 is a deficient number, since it is larger than the sum of its proper divisors (4542846521).

10221404643 is a wasteful number, since it uses less digits than its factorization.

10221404643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135711633 (or 1135711630 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 10221404643 its reverse (34640412201), we get a palindrome (44861816844).

The spelling of 10221404643 in words is "ten billion, two hundred twenty-one million, four hundred four thousand, six hundred forty-three".