1212554425133 has 4 divisors (see below), whose sum is σ = 1212964490460. Its totient is φ = 1212144359808.

The previous prime is 1212554425127. The next prime is 1212554425151. The reversal of 1212554425133 is 3315244552121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 639101115844 + 573453309289 = 799438^2 + 757267^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212554425133 - 2¹² = 1212554421037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212554475133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205028228 + ... + 205034141.

It is an arithmetic number, because the mean of its divisors is an integer number (303241122615).

Almost surely, 2^{1212554425133} is an apocalyptic number.

It is an amenable number.

1212554425133 is a deficient number, since it is larger than the sum of its proper divisors (410065327).

1212554425133 is an equidigital number, since it uses as much as digits as its factorization.

1212554425133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410065326.

The product of its digits is 144000, while the sum is 38.

Adding to 1212554425133 its reverse (3315244552121), we get a palindrome (4527798977254).

The spelling of 1212554425133 in words is "one trillion, two hundred twelve billion, five hundred fifty-four million, four hundred twenty-five thousand, one hundred thirty-three".