2021022002 has 4 divisors (see below), whose sum is σ = 3031533006. Its totient is φ = 1010511000.

The previous prime is 2021021987. The next prime is 2021022007. The reversal of 2021022002 is 2002201202.

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., 1686827041 + 334194961 = 41071^2 + 18281^2 .

It is not an unprimeable number, because it can be changed into a prime (2021022007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505255499 + ... + 505255502.

Almost surely, 2^2021022002 is an apocalyptic number.

2021022002 is a deficient number, since it is larger than the sum of its proper divisors (1010511004).

2021022002 is a wasteful number, since it uses less digits than its factorization.

2021022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010511003.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2021022002 is about 44955.7782937855. The cubic root of 2021022002 is about 1264.3200169964.

Adding to 2021022002 its reverse (2002201202), we get a palindrome (4023223204).

The spelling of 2021022002 in words is "two billion, twenty-one million, twenty-two thousand, two".