1212413440552 has 8 divisors (see below), whose sum is σ = 2273275201050. Its totient is φ = 606206720272.

The previous prime is 1212413440549. The next prime is 1212413440561. The reversal of 1212413440552 is 2550443142121.

It can be written as a sum of positive squares in only one way, i.e., 979612980516 + 232800460036 = 989754^2 + 482494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1212413440552² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75775840027 + ... + 75775840042.

Almost surely, 2^{1212413440552} is an apocalyptic number.

It is an amenable number.

1212413440552 is a deficient number, since it is larger than the sum of its proper divisors (1060861760498).

1212413440552 is a wasteful number, since it uses less digits than its factorization.

1212413440552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151551680075 (or 151551680071 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 1212413440552 its reverse (2550443142121), we get a palindrome (3762856582673).

The spelling of 1212413440552 in words is "one trillion, two hundred twelve billion, four hundred thirteen million, four hundred forty thousand, five hundred fifty-two".