1105211385 has 64 divisors (see below), whose sum is σ = 2027669760. Its totient is φ = 578021184.

The previous prime is 1105211369. The next prime is 1105211407. The reversal of 1105211385 is 5831125011.

1105211385 is a `hidden beast` number, since 1 + 1 + 0 + 521 + 138 + 5 = 666.

It is not a de Polignac number, because 1105211385 - 2⁴ = 1105211369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 578602 + ... + 580508.

It is an arithmetic number, because the mean of its divisors is an integer number (31682340).

Almost surely, 2^1105211385 is an apocalyptic number.

1105211385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1105211385 is a deficient number, since it is larger than the sum of its proper divisors (922458375).

1105211385 is an frugal number, since it uses more digits than its factorization.

1105211385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 1105211385 is about 33244.7196559093. The cubic root of 1105211385 is about 1033.9077323897.

Adding to 1105211385 its reverse (5831125011), we get a palindrome (6936336396).

The spelling of 1105211385 in words is "one billion, one hundred five million, two hundred eleven thousand, three hundred eighty-five".