1021440000123 has 12 divisors (see below), whose sum is σ = 1475434989288. Its totient is φ = 680950005120.

The previous prime is 1021440000067. The next prime is 1021440000143. The reversal of 1021440000123 is 3210000441201.

1021440000123 is a `hidden beast` number, since 102 + 1 + 440 + 0 + 0 + 0 + 123 = 666.

1021440000123 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021440000123 - 2⁶ = 1021440000059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021440000096 and 1021440000105.

It is not an unprimeable number, because it can be changed into a prime (1021440000143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156790 + ... + 1437867.

It is an arithmetic number, because the mean of its divisors is an integer number (122952915774).

Almost surely, 2^{1021440000123} is an apocalyptic number.

1021440000123 is a deficient number, since it is larger than the sum of its proper divisors (453994989165).

1021440000123 is a wasteful number, since it uses less digits than its factorization.

1021440000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665834 (or 1665831 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1021440000123 its reverse (3210000441201), we get a palindrome (4231440441324).

The spelling of 1021440000123 in words is "one trillion, twenty-one billion, four hundred forty million, one hundred twenty-three", and thus it is an aban number.