1212314404240 has 40 divisors (see below), whose sum is σ = 2850301017720. Its totient is φ = 479477154816.

The previous prime is 1212314404207. The next prime is 1212314404243. The reversal of 1212314404240 is 424044132121.

It can be written as a sum of positive squares in 4 ways, for example, as 80082208144 + 1132232196096 = 282988^2 + 1064064^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1212314404240² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212314404199 and 1212314404208.

It is not an unprimeable number, because it can be changed into a prime (1212314404243) 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, 85127319 + ... + 85141558.

It is an arithmetic number, because the mean of its divisors is an integer number (71257525443).

Almost surely, 2^{1212314404240} is an apocalyptic number.

1212314404240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212314404240 is an abundant number, since it is smaller than the sum of its proper divisors (1637986613480).

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

1212314404240 is a wasteful number, since it uses less digits than its factorization.

1212314404240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170268979 (or 170268973 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1212314404240 its reverse (424044132121), we get a palindrome (1636358536361).

The spelling of 1212314404240 in words is "one trillion, two hundred twelve billion, three hundred fourteen million, four hundred four thousand, two hundred forty".