1212203441225 has 96 divisors (see below), whose sum is σ = 1755249371136. Its totient is φ = 813326976000.

The previous prime is 1212203441167. The next prime is 1212203441257. The reversal of 1212203441225 is 5221443022121.

It is not a de Polignac number, because 1212203441225 - 2¹⁴ = 1212203424841 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1631498204 + ... + 1631498946.

It is an arithmetic number, because the mean of its divisors is an integer number (18283847616).

Almost surely, 2^{1212203441225} is an apocalyptic number.

It is an amenable number.

1212203441225 is a deficient number, since it is larger than the sum of its proper divisors (543045929911).

1212203441225 is a wasteful number, since it uses less digits than its factorization.

1212203441225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1570 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1212203441225 its reverse (5221443022121), we get a palindrome (6433646463346).

The spelling of 1212203441225 in words is "one trillion, two hundred twelve billion, two hundred three million, four hundred forty-one thousand, two hundred twenty-five".