1121379012 has 192 divisors, whose sum is σ = 3331686400. Its totient is φ = 323326080.

The previous prime is 1121378981. The next prime is 1121379023. The reversal of 1121379012 is 2109731211.

It is a super-2 number, since 2×1121379012² = 2514981777108192288, which contains 22 as substring.

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, 3387687 + ... + 3388017.

Almost surely, 2^1121379012 is an apocalyptic number.

1121379012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121379012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665843200).

1121379012 is an abundant number, since it is smaller than the sum of its proper divisors (2210307388).

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

1121379012 is a wasteful number, since it uses less digits than its factorization.

1121379012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1121379012 is about 33486.9976558066. The cubic root of 1121379012 is about 1038.9248664932.

The spelling of 1121379012 in words is "one billion, one hundred twenty-one million, three hundred seventy-nine thousand, twelve".