201021002 has 16 divisors (see below), whose sum is σ = 371116032. Its totient is φ = 79524720.

The previous prime is 201020987. The next prime is 201021043. The reversal of 201021002 is 200120102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552074 + ... + 552437.

It is an arithmetic number, because the mean of its divisors is an integer number (23194752).

Almost surely, 2^201021002 is an apocalyptic number.

201021002 is a deficient number, since it is larger than the sum of its proper divisors (170095030).

201021002 is a wasteful number, since it uses less digits than its factorization.

201021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104533.

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

The square root of 201021002 is about 14178.1875428420. The cubic root of 201021002 is about 585.7970016775.

Adding to 201021002 its reverse (200120102), we get a palindrome (401141104).

The spelling of 201021002 in words is "two hundred one million, twenty-one thousand, two".