1121221020002 has 4 divisors (see below), whose sum is σ = 1681831530006. Its totient is φ = 560610510000.

The previous prime is 1121221019923. The next prime is 1121221020047. The reversal of 1121221020002 is 2000201221211.

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., 841973243281 + 279247776721 = 917591^2 + 528439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280305254999 + ... + 280305255002.

Almost surely, 2^{1121221020002} is an apocalyptic number.

1121221020002 is a deficient number, since it is larger than the sum of its proper divisors (560610510004).

1121221020002 is an equidigital number, since it uses as much as digits as its factorization.

1121221020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560610510003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1121221020002 its reverse (2000201221211), we get a palindrome (3121422241213).

The spelling of 1121221020002 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty thousand, two".