2111117372 has 72 divisors (see below), whose sum is σ = 4642100064. Its totient is φ = 832664448.

The previous prime is 2111117369. The next prime is 2111117389. The reversal of 2111117372 is 2737111112.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1010513 + ... + 1012599.

It is an arithmetic number, because the mean of its divisors is an integer number (64473612).

Almost surely, 2^2111117372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111117372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321050032).

2111117372 is an abundant number, since it is smaller than the sum of its proper divisors (2530982692).

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

2111117372 is a wasteful number, since it uses less digits than its factorization.

2111117372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515 (or 2506 counting only the distinct ones).

The product of its digits is 588, while the sum is 26.

The square root of 2111117372 is about 45946.8973054765. The cubic root of 2111117372 is about 1282.8349785842.

Adding to 2111117372 its reverse (2737111112), we get a palindrome (4848228484).

It can be divided in two parts, 21111 and 17372, that added together give a palindrome (38483).

The spelling of 2111117372 in words is "two billion, one hundred eleven million, one hundred seventeen thousand, three hundred seventy-two".