1121501004 has 48 divisors (see below), whose sum is σ = 2825528160. Its totient is φ = 344171520.

The previous prime is 1121500993. The next prime is 1121501039. The reversal of 1121501004 is 4001051211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51444 + ... + 69924.

It is an arithmetic number, because the mean of its divisors is an integer number (58865170).

Almost surely, 2^1121501004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121501004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412764080).

1121501004 is an abundant number, since it is smaller than the sum of its proper divisors (1704027156).

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

1121501004 is a wasteful number, since it uses less digits than its factorization.

1121501004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18890 (or 18888 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1121501004 is about 33488.8190893618. The cubic root of 1121501004 is about 1038.9625391342.

Adding to 1121501004 its reverse (4001051211), we get a palindrome (5122552215).

The spelling of 1121501004 in words is "one billion, one hundred twenty-one million, five hundred one thousand, four".