1212020323143 has 16 divisors (see below), whose sum is σ = 1846907535360. Its totient is φ = 692575757856.

The previous prime is 1212020323117. The next prime is 1212020323303. The reversal of 1212020323143 is 3413230202121.

It is not a de Polignac number, because 1212020323143 - 2⁹ = 1212020322631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212020323543) 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, 2234298 + ... + 2723256.

It is an arithmetic number, because the mean of its divisors is an integer number (115431720960).

Almost surely, 2^{1212020323143} is an apocalyptic number.

1212020323143 is a deficient number, since it is larger than the sum of its proper divisors (634887212217).

1212020323143 is a wasteful number, since it uses less digits than its factorization.

1212020323143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607006.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1212020323143 its reverse (3413230202121), we get a palindrome (4625250525264).

The spelling of 1212020323143 in words is "one trillion, two hundred twelve billion, twenty million, three hundred twenty-three thousand, one hundred forty-three".