10201021002 has 24 divisors (see below), whose sum is σ = 22105162560. Its totient is φ = 3399886440.

The previous prime is 10201021001. The next prime is 10201021049. The reversal of 10201021002 is 20012010201.

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 (10201021001) 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, 118149 + ... + 185367.

It is an arithmetic number, because the mean of its divisors is an integer number (921048440).

Almost surely, 2^10201021002 is an apocalyptic number.

10201021002 is an abundant number, since it is smaller than the sum of its proper divisors (11904141558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10201021002 is a wasteful number, since it uses less digits than its factorization.

10201021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75658 (or 75655 counting only the distinct ones).

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

Adding to 10201021002 its reverse (20012010201), we get a palindrome (30213031203).

The spelling of 10201021002 in words is "ten billion, two hundred one million, twenty-one thousand, two".