1021230402125 has 16 divisors (see below), whose sum is σ = 1274548622256. Its totient is φ = 816950296000.

The previous prime is 1021230402103. The next prime is 1021230402139. The reversal of 1021230402125 is 5212040321201.

1021230402125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 661055180809 + 360175221316 = 813053^2 + 600146^2 .

It is not a de Polignac number, because 1021230402125 - 2¹² = 1021230398029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021230402125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3092495 + ... + 3406755.

It is an arithmetic number, because the mean of its divisors is an integer number (79659288891).

Almost surely, 2^{1021230402125} is an apocalyptic number.

It is an amenable number.

1021230402125 is a deficient number, since it is larger than the sum of its proper divisors (253318220131).

1021230402125 is an equidigital number, since it uses as much as digits as its factorization.

1021230402125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340273 (or 340263 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 1021230402125 its reverse (5212040321201), we get a palindrome (6233270723326).

The spelling of 1021230402125 in words is "one trillion, twenty-one billion, two hundred thirty million, four hundred two thousand, one hundred twenty-five".