1121101000 has 32 divisors (see below), whose sum is σ = 2623378680. Its totient is φ = 448440000.

The previous prime is 1121100991. The next prime is 1121101001. The reversal of 1121101000 is 1011211.

It can be written as a sum of positive squares in 4 ways, for example, as 116337796 + 1004763204 = 10786^2 + 31698^2 .

It is not an unprimeable number, because it can be changed into a prime (1121101001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559551 + ... + 561550.

Almost surely, 2^1121101000 is an apocalyptic number.

1121101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121101000 is an abundant number, since it is smaller than the sum of its proper divisors (1502277680).

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

1121101000 is a wasteful number, since it uses less digits than its factorization.

1121101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121122 (or 1121108 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1121101000 is about 33482.8463545141. The cubic root of 1121101000 is about 1038.8390027340.

Adding to 1121101000 its reverse (1011211), we get a palindrome (1122112211).

The spelling of 1121101000 in words is "one billion, one hundred twenty-one million, one hundred one thousand".