1213010312255 has 24 divisors (see below), whose sum is σ = 1721021811840. Its totient is φ = 818142776640.

The previous prime is 1213010312251. The next prime is 1213010312257. The reversal of 1213010312255 is 5522130103121.

It is not a de Polignac number, because 1213010312255 - 2² = 1213010312251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213010312251) 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, 40567535 + ... + 40597424.

It is an arithmetic number, because the mean of its divisors is an integer number (71709242160).

Almost surely, 2^{1213010312255} is an apocalyptic number.

1213010312255 is a deficient number, since it is larger than the sum of its proper divisors (508011499585).

1213010312255 is an equidigital number, since it uses as much as digits as its factorization.

1213010312255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81165039 (or 81165032 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 1213010312255 its reverse (5522130103121), we get a palindrome (6735140415376).

The spelling of 1213010312255 in words is "one trillion, two hundred thirteen billion, ten million, three hundred twelve thousand, two hundred fifty-five".