1212431057747 has 16 divisors (see below), whose sum is σ = 1492267929600. Its totient is φ = 959257125792.

The previous prime is 1212431057681. The next prime is 1212431057753. The reversal of 1212431057747 is 7477501342121.

It is not a de Polignac number, because 1212431057747 - 2¹⁴ = 1212431041363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212431057698 and 1212431057707.

It is not an unprimeable number, because it can be changed into a prime (1212431057447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3127754 + ... + 3493952.

It is an arithmetic number, because the mean of its divisors is an integer number (93266745600).

Almost surely, 2^{1212431057747} is an apocalyptic number.

1212431057747 is a deficient number, since it is larger than the sum of its proper divisors (279836871853).

1212431057747 is a wasteful number, since it uses less digits than its factorization.

1212431057747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402602.

The product of its (nonzero) digits is 329280, while the sum is 44.

Adding to 1212431057747 its reverse (7477501342121), we get a palindrome (8689932399868).

The spelling of 1212431057747 in words is "one trillion, two hundred twelve billion, four hundred thirty-one million, fifty-seven thousand, seven hundred forty-seven".