1212120143 has 8 divisors (see below), whose sum is σ = 1374063600. Its totient is φ = 1059991488.

The previous prime is 1212120139. The next prime is 1212120167. The reversal of 1212120143 is 3410212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212120143 - 2² = 1212120139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212120113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2453438 + ... + 2453931.

It is an arithmetic number, because the mean of its divisors is an integer number (171757950).

Almost surely, 2^1212120143 is an apocalyptic number.

1212120143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1212120143 is a deficient number, since it is larger than the sum of its proper divisors (161943457).

1212120143 is a wasteful number, since it uses less digits than its factorization.

1212120143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4907401.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1212120143 is about 34815.5158370517. The cubic root of 1212120143 is about 1066.2242507824.

Adding to 1212120143 its reverse (3410212121), we get a palindrome (4622332264).

The spelling of 1212120143 in words is "one billion, two hundred twelve million, one hundred twenty thousand, one hundred forty-three".