1212401143 has 8 divisors (see below), whose sum is σ = 1238795712. Its totient is φ = 1186031616.

The previous prime is 1212401123. The next prime is 1212401159. The reversal of 1212401143 is 3411042121.

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 1212401143 - 2¹⁷ = 1212270071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212401143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212401123) 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, 118071 + ... + 127927.

It is an arithmetic number, because the mean of its divisors is an integer number (154849464).

Almost surely, 2^1212401143 is an apocalyptic number.

1212401143 is a deficient number, since it is larger than the sum of its proper divisors (26394569).

1212401143 is an equidigital number, since it uses as much as digits as its factorization.

1212401143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12521.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1212401143 is about 34819.5511602318. The cubic root of 1212401143 is about 1066.3066369680.

Adding to 1212401143 its reverse (3411042121), we get a palindrome (4623443264).

The spelling of 1212401143 in words is "one billion, two hundred twelve million, four hundred one thousand, one hundred forty-three".