1121002122123 has 24 divisors (see below), whose sum is σ = 1819597651872. Its totient is φ = 659854090368.

The previous prime is 1121002122073. The next prime is 1121002122193. The reversal of 1121002122123 is 3212212001211.

It is not a de Polignac number, because 1121002122123 - 2⁹ = 1121002121611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121002122096 and 1121002122105.

It is not an unprimeable number, because it can be changed into a prime (1121002122193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208284586 + ... + 208289967.

It is an arithmetic number, because the mean of its divisors is an integer number (75816568828).

Almost surely, 2^{1121002122123} is an apocalyptic number.

1121002122123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1121002122123 is a deficient number, since it is larger than the sum of its proper divisors (698595529749).

1121002122123 is a wasteful number, since it uses less digits than its factorization.

1121002122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416574595 (or 416574592 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1121002122123 its reverse (3212212001211), we get a palindrome (4333214123334).

The spelling of 1121002122123 in words is "one trillion, one hundred twenty-one billion, two million, one hundred twenty-two thousand, one hundred twenty-three".