1101244212 has 36 divisors (see below), whose sum is σ = 2808345540. Its totient is φ = 363831552.

The previous prime is 1101244187. The next prime is 1101244213. The reversal of 1101244212 is 2124421011.

It can be written as a sum of positive squares in 2 ways, for example, as 406183716 + 695060496 = 20154^2 + 26364^2 .

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101244213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131287 + ... + 139422.

Almost surely, 2^1101244212 is an apocalyptic number.

1101244212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101244212 is an abundant number, since it is smaller than the sum of its proper divisors (1707101328).

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

1101244212 is a wasteful number, since it uses less digits than its factorization.

1101244212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270832 (or 270827 counting only the distinct ones).

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

The square root of 1101244212 is about 33184.9998041284. Note that the first 3 decimals coincide. The cubic root of 1101244212 is about 1032.6691734436.

Adding to 1101244212 its reverse (2124421011), we get a palindrome (3225665223).

The spelling of 1101244212 in words is "one billion, one hundred one million, two hundred forty-four thousand, two hundred twelve".