10221002001 has 12 divisors (see below), whose sum is σ = 16872765312. Its totient is φ = 5840572536.

The previous prime is 10221001957. The next prime is 10221002081. The reversal of 10221002001 is 10020012201.

It is not a de Polignac number, because 10221002001 - 2¹⁷ = 10220870929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10221002081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81119001 + ... + 81119126.

It is an arithmetic number, because the mean of its divisors is an integer number (1406063776).

Almost surely, 2^10221002001 is an apocalyptic number.

It is an amenable number.

10221002001 is a deficient number, since it is larger than the sum of its proper divisors (6651763311).

10221002001 is a wasteful number, since it uses less digits than its factorization.

10221002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162238140 (or 162238137 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10221002001 its reverse (10020012201), we get a palindrome (20241014202).

The spelling of 10221002001 in words is "ten billion, two hundred twenty-one million, two thousand, one".