1121001221002 has 16 divisors (see below), whose sum is σ = 1845015074280. Its totient is φ = 507623193792.

The previous prime is 1121001220919. The next prime is 1121001221003. The reversal of 1121001221002 is 2001221001211.

It can be written as a sum of positive squares in 4 ways, for example, as 1078068966601 + 42932254401 = 1038301^2 + 207201^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1121001221003) 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, 406747977 + ... + 406750732.

Almost surely, 2^{1121001221002} is an apocalyptic number.

1121001221002 is a deficient number, since it is larger than the sum of its proper divisors (724013853278).

1121001221002 is a wasteful number, since it uses less digits than its factorization.

1121001221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813498777.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1121001221002 its reverse (2001221001211), we get a palindrome (3122222222213).

The spelling of 1121001221002 in words is "one trillion, one hundred twenty-one billion, one million, two hundred twenty-one thousand, two".