1220103210225 has 24 divisors (see below), whose sum is σ = 2047345335520. Its totient is φ = 641009445120.

The previous prime is 1220103210217. The next prime is 1220103210229. The reversal of 1220103210225 is 5220123010221.

It is not a de Polignac number, because 1220103210225 - 2³ = 1220103210217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220103210229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121398280 + ... + 121408329.

Almost surely, 2^{1220103210225} is an apocalyptic number.

1220103210225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220103210225 is a deficient number, since it is larger than the sum of its proper divisors (827242125295).

1220103210225 is a wasteful number, since it uses less digits than its factorization.

1220103210225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242806689 (or 242806684 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 1220103210225 its reverse (5220123010221), we get a palindrome (6440226220446).

The spelling of 1220103210225 in words is "one trillion, two hundred twenty billion, one hundred three million, two hundred ten thousand, two hundred twenty-five".