1220031210225 has 24 divisors (see below), whose sum is σ = 2018957162400. Its totient is φ = 650090120320.

The previous prime is 1220031210193. The next prime is 1220031210253. The reversal of 1220031210225 is 5220121300221.

It is not a de Polignac number, because 1220031210225 - 2⁵ = 1220031210193 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7332075 + ... + 7496624.

It is an arithmetic number, because the mean of its divisors is an integer number (84123215100).

Almost surely, 2^{1220031210225} is an apocalyptic number.

1220031210225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220031210225 is a deficient number, since it is larger than the sum of its proper divisors (798925952175).

1220031210225 is a wasteful number, since it uses less digits than its factorization.

1220031210225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14829809 (or 14829804 counting only the distinct ones).

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

Adding to 1220031210225 its reverse (5220121300221), we get a palindrome (6440152510446).

The spelling of 1220031210225 in words is "one trillion, two hundred twenty billion, thirty-one million, two hundred ten thousand, two hundred twenty-five".