1121023000 has 32 divisors (see below), whose sum is σ = 2623196160. Its totient is φ = 448408800.

The previous prime is 1121022997. The next prime is 1121023019. The reversal of 1121023000 is 3201211.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 559512 + ... + 561511.

It is an arithmetic number, because the mean of its divisors is an integer number (81974880).

Almost surely, 2^1121023000 is an apocalyptic number.

1121023000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121023000 is an abundant number, since it is smaller than the sum of its proper divisors (1502173160).

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

1121023000 is a wasteful number, since it uses less digits than its factorization.

1121023000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121044 (or 1121030 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1121023000 is about 33481.6815587270. The cubic root of 1121023000 is about 1038.8149099533.

Adding to 1121023000 its reverse (3201211), we get a palindrome (1124224211).

The spelling of 1121023000 in words is "one billion, one hundred twenty-one million, twenty-three thousand".