20201002 has 4 divisors (see below), whose sum is σ = 30301506. Its totient is φ = 10100500.

The previous prime is 20200993. The next prime is 20201021. The reversal of 20201002 is 20010202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13549761 + 6651241 = 3681^2 + 2579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050249 + ... + 5050252.

Almost surely, 2^20201002 is an apocalyptic number.

20201002 is a deficient number, since it is larger than the sum of its proper divisors (10100504).

20201002 is a wasteful number, since it uses less digits than its factorization.

20201002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10100503.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 20201002 is about 4494.5524805035. The cubic root of 20201002 is about 272.3480711890.

Adding to 20201002 its reverse (20010202), we get a palindrome (40211204).

The spelling of 20201002 in words is "twenty million, two hundred one thousand, two".