1213450445208 has 32 divisors (see below), whose sum is σ = 3046213787760. Its totient is φ = 402805125120.

The previous prime is 1213450445203. The next prime is 1213450445209. The reversal of 1213450445208 is 8025440543121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213450445203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104891385 + ... + 104902952.

Almost surely, 2^{1213450445208} is an apocalyptic number.

It is an amenable number.

1213450445208 is an abundant number, since it is smaller than the sum of its proper divisors (1832763342552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213450445208 is a wasteful number, since it uses less digits than its factorization.

1213450445208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209794587 (or 209794583 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 39.

Adding to 1213450445208 its reverse (8025440543121), we get a palindrome (9238890988329).

The spelling of 1213450445208 in words is "one trillion, two hundred thirteen billion, four hundred fifty million, four hundred forty-five thousand, two hundred eight".