2021012002 has 8 divisors (see below), whose sum is σ = 3113451036. Its totient is φ = 983194992.

The previous prime is 2021011981. The next prime is 2021012009. The reversal of 2021012002 is 2002101202.

It can be written as a sum of positive squares in 2 ways, for example, as 1938728961 + 82283041 = 44031^2 + 9071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2021012002.

It is not an unprimeable number, because it can be changed into a prime (2021012009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13655413 + ... + 13655560.

Almost surely, 2^2021012002 is an apocalyptic number.

2021012002 is a deficient number, since it is larger than the sum of its proper divisors (1092439034).

2021012002 is a wasteful number, since it uses less digits than its factorization.

2021012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27311012.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2021012002 is about 44955.6670732401. The cubic root of 2021012002 is about 1264.3179317113.

Adding to 2021012002 its reverse (2002101202), we get a palindrome (4023113204).

It can be divided in two parts, 202101200 and 2, that added together give a palindrome (202101202).

The spelling of 2021012002 in words is "two billion, twenty-one million, twelve thousand, two".