2112112404 has 36 divisors (see below), whose sum is σ = 5391820980. Its totient is φ = 697065600.

The previous prime is 2112112393. The next prime is 2112112433. The reversal of 2112112404 is 4042112112.

2112112404 is a `hidden beast` number, since 211 + 211 + 240 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 930128004 + 1181984400 = 30498^2 + 34380^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2112112404² = 8922037614261318432, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286809 + ... + 294080.

It is an arithmetic number, because the mean of its divisors is an integer number (149772805).

Almost surely, 2^2112112404 is an apocalyptic number.

It is an amenable number.

2112112404 is an abundant number, since it is smaller than the sum of its proper divisors (3279708576).

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

2112112404 is a wasteful number, since it uses less digits than its factorization.

2112112404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581000 (or 580995 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2112112404 is about 45957.7240950855. The cubic root of 2112112404 is about 1283.0364929385.

Adding to 2112112404 its reverse (4042112112), we get a palindrome (6154224516).

The spelling of 2112112404 in words is "two billion, one hundred twelve million, one hundred twelve thousand, four hundred four".