1123211111002 has 4 divisors (see below), whose sum is σ = 1684816666506. Its totient is φ = 561605555500.

The previous prime is 1123211110981. The next prime is 1123211111051. The reversal of 1123211111002 is 2001111123211.

It is a happy number.

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., 834959165121 + 288251945881 = 913761^2 + 536891^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280802777749 + ... + 280802777752.

Almost surely, 2^{1123211111002} is an apocalyptic number.

1123211111002 is a deficient number, since it is larger than the sum of its proper divisors (561605555504).

1123211111002 is an equidigital number, since it uses as much as digits as its factorization.

1123211111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561605555503.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1123211111002 its reverse (2001111123211), we get a palindrome (3124322234213).

The spelling of 1123211111002 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, one hundred eleven thousand, two".