1210420113025 has 12 divisors (see below), whose sum is σ = 1503522207532. Its totient is φ = 966657853440.

The previous prime is 1210420112999. The next prime is 1210420113109. The reversal of 1210420113025 is 5203110240121.

It can be written as a sum of positive squares in 6 ways, for example, as 165382115584 + 1045037997441 = 406672^2 + 1022271^2 .

It is not a de Polignac number, because 1210420113025 - 2⁷ = 1210420112897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210420112987 and 1210420113005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41941212 + ... + 41970061.

Almost surely, 2^{1210420113025} is an apocalyptic number.

It is an amenable number.

1210420113025 is a deficient number, since it is larger than the sum of its proper divisors (293102094507).

1210420113025 is an equidigital number, since it uses as much as digits as its factorization.

1210420113025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83911860 (or 83911855 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 1210420113025 its reverse (5203110240121), we get a palindrome (6413530353146).

The spelling of 1210420113025 in words is "one trillion, two hundred ten billion, four hundred twenty million, one hundred thirteen thousand, twenty-five".