2011115502 has 48 divisors (see below), whose sum is σ = 4759342848. Its totient is φ = 608685840.

The previous prime is 2011115497. The next prime is 2011115507. The reversal of 2011115502 is 2055111102.

2011115502 is a `hidden beast` number, since 2 + 0 + 1 + 111 + 550 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2011115497) and next prime (2011115507).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011115507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169083 + ... + 180585.

It is an arithmetic number, because the mean of its divisors is an integer number (99152976).

Almost surely, 2^2011115502 is an apocalyptic number.

2011115502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2011115502 is an abundant number, since it is smaller than the sum of its proper divisors (2748227346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011115502 is a wasteful number, since it uses less digits than its factorization.

2011115502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12405 (or 12402 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 2011115502 is about 44845.4624460491. The cubic root of 2011115502 is about 1262.2508482228.

Adding to 2011115502 its reverse (2055111102), we get a palindrome (4066226604).

The spelling of 2011115502 in words is "two billion, eleven million, one hundred fifteen thousand, five hundred two".