1212300121143 has 16 divisors (see below), whose sum is σ = 1660301788160. Its totient is φ = 786254929056.

The previous prime is 1212300121111. The next prime is 1212300121147. The reversal of 1212300121143 is 3411210032121.

It is not a de Polignac number, because 1212300121143 - 2⁵ = 1212300121111 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 (1212300121147) 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, 157446 + ... + 1565052.

It is an arithmetic number, because the mean of its divisors is an integer number (103768861760).

Almost surely, 2^{1212300121143} is an apocalyptic number.

1212300121143 is a deficient number, since it is larger than the sum of its proper divisors (448001667017).

1212300121143 is a wasteful number, since it uses less digits than its factorization.

1212300121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415406.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1212300121143 its reverse (3411210032121), we get a palindrome (4623510153264).

The spelling of 1212300121143 in words is "one trillion, two hundred twelve billion, three hundred million, one hundred twenty-one thousand, one hundred forty-three".