20012002 has 4 divisors (see below), whose sum is σ = 30018006. Its totient is φ = 10006000.

The previous prime is 20011993. The next prime is 20012011. The reversal of 20012002 is 20021002.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20011993) and next prime (20012011).

It can be written as a sum of positive squares in only one way, i.e., 16008001 + 4004001 = 4001^2 + 2001^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5002999 + ... + 5003002.

Almost surely, 2^20012002 is an apocalyptic number.

20012002 is a deficient number, since it is larger than the sum of its proper divisors (10006004).

20012002 is a wasteful number, since it uses less digits than its factorization.

20012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006003.

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

The square root of 20012002 is about 4473.4776181401. The cubic root of 20012002 is about 271.4960482022.

Adding to 20012002 its reverse (20021002), we get a palindrome (40033004).

The spelling of 20012002 in words is "twenty million, twelve thousand, two".