1101221144 has 32 divisors (see below), whose sum is σ = 2077920000. Its totient is φ = 547122720.

The previous prime is 1101221123. The next prime is 1101221167. The reversal of 1101221144 is 4411221011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1241069 + ... + 1241955.

It is an arithmetic number, because the mean of its divisors is an integer number (64935000).

Almost surely, 2^1101221144 is an apocalyptic number.

It is an amenable number.

1101221144 is a deficient number, since it is larger than the sum of its proper divisors (976698856).

1101221144 is a wasteful number, since it uses less digits than its factorization.

1101221144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1699 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1101221144 is about 33184.6522356345. The cubic root of 1101221144 is about 1032.6619628787.

Adding to 1101221144 its reverse (4411221011), we get a palindrome (5512442155).

The spelling of 1101221144 in words is "one billion, one hundred one million, two hundred twenty-one thousand, one hundred forty-four".