2101022002 has 4 divisors (see below), whose sum is σ = 3151533006. Its totient is φ = 1050511000.

The previous prime is 2101021943. The next prime is 2101022029. The reversal of 2101022002 is 2002201012.

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., 1821497041 + 279524961 = 42679^2 + 16719^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2101022002.

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 as a sum of consecutive naturals, namely, 525255499 + ... + 525255502.

Almost surely, 2^2101022002 is an apocalyptic number.

2101022002 is a deficient number, since it is larger than the sum of its proper divisors (1050511004).

2101022002 is a wasteful number, since it uses less digits than its factorization.

2101022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050511003.

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

The square root of 2101022002 is about 45836.9065491990. The cubic root of 2101022002 is about 1280.7868701011.

Adding to 2101022002 its reverse (2002201012), we get a palindrome (4103223014).

The spelling of 2101022002 in words is "two billion, one hundred one million, twenty-two thousand, two".