1121641312 has 24 divisors (see below), whose sum is σ = 2408980392. Its totient is φ = 509836800.

The previous prime is 1121641247. The next prime is 1121641319. The reversal of 1121641312 is 2131461211.

It is a super-3 number, since 3×1121641312³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121641319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592889 + ... + 1593592.

It is an arithmetic number, because the mean of its divisors is an integer number (100374183).

Almost surely, 2^1121641312 is an apocalyptic number.

It is an amenable number.

1121641312 is an abundant number, since it is smaller than the sum of its proper divisors (1287339080).

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

1121641312 is a wasteful number, since it uses less digits than its factorization.

1121641312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186502 (or 3186494 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 1121641312 is about 33490.9138722729. The cubic root of 1121641312 is about 1039.0058646050.

The spelling of 1121641312 in words is "one billion, one hundred twenty-one million, six hundred forty-one thousand, three hundred twelve".