3990111111111 has 4 divisors (see below), whose sum is σ = 5320148148152. Its totient is φ = 2660074074072.

The previous prime is 3990111111109. The next prime is 3990111111113. The reversal of 3990111111111 is 1111111110993.

3990111111111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (3990111111109) and next prime (3990111111113).

It is not a de Polignac number, because 3990111111111 - 2¹ = 3990111111109 is a prime.

It is a super-2 number, since 2×3990111111111² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

3990111111111 is a modest number, since divided by 1111111 gives 399011 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990111111113) 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, 665018518516 + ... + 665018518521.

It is an arithmetic number, because the mean of its divisors is an integer number (1330037037038).

Almost surely, 2^{3990111111111} is an apocalyptic number.

3990111111111 is a deficient number, since it is larger than the sum of its proper divisors (1330037037041).

3990111111111 is a wasteful number, since it uses less digits than its factorization.

3990111111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330037037040.

The product of its (nonzero) digits is 243, while the sum is 30.

The spelling of 3990111111111 in words is "three trillion, nine hundred ninety billion, one hundred eleven million, one hundred eleven thousand, one hundred eleven".