1002102111 has 96 divisors (see below), whose sum is σ = 1698278400. Its totient is φ = 587119104.

The previous prime is 1002102109. The next prime is 1002102113. The reversal of 1002102111 is 1112012001.

It is a happy number.

1002102111 is nontrivially palindromic in base 8.

It is an interprime number because it is at equal distance from previous prime (1002102109) and next prime (1002102113).

It is not a de Polignac number, because 1002102111 - 2¹ = 1002102109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1002102093 and 1002102102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002102113) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5035590 + ... + 5035788.

It is an arithmetic number, because the mean of its divisors is an integer number (17690400).

Almost surely, 2^1002102111 is an apocalyptic number.

1002102111 is a deficient number, since it is larger than the sum of its proper divisors (696176289).

1002102111 is a wasteful number, since it uses less digits than its factorization.

1002102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1002102111 is about 31655.9964461711. The cubic root of 1002102111 is about 1000.7002132536.

Adding to 1002102111 its reverse (1112012001), we get a palindrome (2114114112).

The spelling of 1002102111 in words is "one billion, two million, one hundred two thousand, one hundred eleven".