1121012000 has 48 divisors (see below), whose sum is σ = 2754336312. Its totient is φ = 448403200.

The previous prime is 1121011967. The next prime is 1121012047. The reversal of 1121012000 is 2101211.

It can be written as a sum of positive squares in 4 ways, for example, as 587771536 + 533240464 = 24244^2 + 23092^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

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, 136127 + ... + 144126.

Almost surely, 2^1121012000 is an apocalyptic number.

1121012000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121012000 is an abundant number, since it is smaller than the sum of its proper divisors (1633324312).

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

1121012000 is an equidigital number, since it uses as much as digits as its factorization.

1121012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280278 (or 280260 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1121012000 is about 33481.5172893942. The cubic root of 1121012000 is about 1038.8115121636.

Adding to 1121012000 its reverse (2101211), we get a palindrome (1123113211).

The spelling of 1121012000 in words is "one billion, one hundred twenty-one million, twelve thousand".