1212314210145 has 48 divisors (see below), whose sum is σ = 2137745153232. Its totient is φ = 635386798080.

The previous prime is 1212314210141. The next prime is 1212314210167. The reversal of 1212314210145 is 5410124132121.

1212314210145 is a `hidden beast` number, since 1 + 2 + 1 + 231 + 421 + 0 + 1 + 4 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 125207699409 + 1087106510736 = 353847^2 + 1042644^2 .

It is not a de Polignac number, because 1212314210145 - 2² = 1212314210141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212314210141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2809969 + ... + 3212561.

It is an arithmetic number, because the mean of its divisors is an integer number (44536357359).

Almost surely, 2^{1212314210145} is an apocalyptic number.

1212314210145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1212314210145 is a deficient number, since it is larger than the sum of its proper divisors (925430943087).

1212314210145 is a wasteful number, since it uses less digits than its factorization.

1212314210145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403762 (or 403759 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1212314210145 its reverse (5410124132121), we get a palindrome (6622438342266).

The spelling of 1212314210145 in words is "one trillion, two hundred twelve billion, three hundred fourteen million, two hundred ten thousand, one hundred forty-five".