1002102031111 has 4 divisors (see below), whose sum is σ = 1017058777912. Its totient is φ = 987145284312.

The previous prime is 1002102031081. The next prime is 1002102031169. The reversal of 1002102031111 is 1111302012001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1002102031111 - 2¹⁹ = 1002101506823 is a prime.

It is a super-2 number, since 2×1002102031111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002102031091 and 1002102031100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002102031171) 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, 7478373300 + ... + 7478373433.

It is an arithmetic number, because the mean of its divisors is an integer number (254264694478).

Almost surely, 2^{1002102031111} is an apocalyptic number.

1002102031111 is a deficient number, since it is larger than the sum of its proper divisors (14956746801).

1002102031111 is an equidigital number, since it uses as much as digits as its factorization.

1002102031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14956746800.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1002102031111 its reverse (1111302012001), we get a palindrome (2113404043112).

The spelling of 1002102031111 in words is "one trillion, two billion, one hundred two million, thirty-one thousand, one hundred eleven".