10123021111 has 16 divisors (see below), whose sum is σ = 11844288000. Its totient is φ = 8472511008.

The previous prime is 10123021099. The next prime is 10123021151. The reversal of 10123021111 is 11112032101.

It is a happy number.

10123021111 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10123021111 - 2⁷ = 10123020983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123021091 and 10123021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123021151) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 20715 + ... + 143788.

It is an arithmetic number, because the mean of its divisors is an integer number (740268000).

Almost surely, 2^10123021111 is an apocalyptic number.

10123021111 is a deficient number, since it is larger than the sum of its proper divisors (1721266889).

10123021111 is a wasteful number, since it uses less digits than its factorization.

10123021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164718.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10123021111 its reverse (11112032101), we get a palindrome (21235053212).

The spelling of 10123021111 in words is "ten billion, one hundred twenty-three million, twenty-one thousand, one hundred eleven".