1121021002 has 4 divisors (see below), whose sum is σ = 1681531506. Its totient is φ = 560510500.

The previous prime is 1121020993. The next prime is 1121021093. The reversal of 1121021002 is 2001201211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 858548601 + 262472401 = 29301^2 + 16201^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121021002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280255249 + ... + 280255252.

Almost surely, 2^1121021002 is an apocalyptic number.

1121021002 is a deficient number, since it is larger than the sum of its proper divisors (560510504).

1121021002 is an equidigital number, since it uses as much as digits as its factorization.

1121021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560510503.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1121021002 is about 33481.6517215026. The cubic root of 1121021002 is about 1038.8142927928.

Adding to 1121021002 its reverse (2001201211), we get a palindrome (3122222213).

The spelling of 1121021002 in words is "one billion, one hundred twenty-one million, twenty-one thousand, two".