1105112421 has 48 divisors (see below), whose sum is σ = 1964476800. Its totient is φ = 584239104.

The previous prime is 1105112399. The next prime is 1105112423. The reversal of 1105112421 is 1242115011.

1105112421 is a `hidden beast` number, since 110 + 511 + 2 + 42 + 1 = 666.

It is not a de Polignac number, because 1105112421 - 2⁵ = 1105112389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1105112394 and 1105112403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105112423) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 54445 + ... + 71933.

It is an arithmetic number, because the mean of its divisors is an integer number (40926600).

Almost surely, 2^1105112421 is an apocalyptic number.

It is an amenable number.

1105112421 is a deficient number, since it is larger than the sum of its proper divisors (859364379).

1105112421 is a wasteful number, since it uses less digits than its factorization.

1105112421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17578 (or 17575 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1105112421 is about 33243.2312057658. The cubic root of 1105112421 is about 1033.8768717174.

Adding to 1105112421 its reverse (1242115011), we get a palindrome (2347227432).

It can be divided in two parts, 1105 and 112421, that added together give a triangular number (113526 = T₄₇₆).

The spelling of 1105112421 in words is "one billion, one hundred five million, one hundred twelve thousand, four hundred twenty-one".