1101215052 has 72 divisors (see below), whose sum is σ = 3368435616. Its totient is φ = 296123904.

The previous prime is 1101215021. The next prime is 1101215099. The reversal of 1101215052 is 2505121011.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124243 + ... + 132810.

It is an arithmetic number, because the mean of its divisors is an integer number (46783828).

Almost surely, 2^1101215052 is an apocalyptic number.

1101215052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101215052 is an abundant number, since it is smaller than the sum of its proper divisors (2267220564).

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

1101215052 is a wasteful number, since it uses less digits than its factorization.

1101215052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257087 (or 257082 counting only the distinct ones).

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

The square root of 1101215052 is about 33184.5604460870. The cubic root of 1101215052 is about 1032.6600586325.

Adding to 1101215052 its reverse (2505121011), we get a palindrome (3606336063).

It can be divided in two parts, 1101 and 215052, that added together give a triangular number (216153 = T₆₅₇).

The spelling of 1101215052 in words is "one billion, one hundred one million, two hundred fifteen thousand, fifty-two".