1020002111 has 2 divisors, whose sum is σ = 1020002112. Its totient is φ = 1020002110.

The previous prime is 1020002107. The next prime is 1020002143. The reversal of 1020002111 is 1112000201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020002111 - 2² = 1020002107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020002911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510001055 + 510001056.

It is an arithmetic number, because the mean of its divisors is an integer number (510001056).

Almost surely, 2^1020002111 is an apocalyptic number.

1020002111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020002111 is an equidigital number, since it uses as much as digits as its factorization.

1020002111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1020002111 is about 31937.4718943125. The cubic root of 1020002111 is about 1006.6234039977.

Adding to 1020002111 its reverse (1112000201), we get a palindrome (2132002312).

The spelling of 1020002111 in words is "one billion, twenty million, two thousand, one hundred eleven".