1110123120021 has 16 divisors (see below), whose sum is σ = 1483205965824. Its totient is φ = 738562742064.

The previous prime is 1110123119981. The next prime is 1110123120031. The reversal of 1110123120021 is 1200213210111.

It is not a de Polignac number, because 1110123120021 - 2⁶ = 1110123119957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110123120031) 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 15 ways as a sum of consecutive naturals, for example, 2657040 + ... + 3046326.

It is an arithmetic number, because the mean of its divisors is an integer number (92700372864).

Almost surely, 2^{1110123120021} is an apocalyptic number.

It is an amenable number.

1110123120021 is a deficient number, since it is larger than the sum of its proper divisors (373082845803).

1110123120021 is an equidigital number, since it uses as much as digits as its factorization.

1110123120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391240.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1110123120021 its reverse (1200213210111), we get a palindrome (2310336330132).

The spelling of 1110123120021 in words is "one trillion, one hundred ten billion, one hundred twenty-three million, one hundred twenty thousand, twenty-one".