1211121444143 has 8 divisors (see below), whose sum is σ = 1308399099168. Its totient is φ = 1114431570144.

The previous prime is 1211121444133. The next prime is 1211121444229. The reversal of 1211121444143 is 3414441211121.

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 1211121444143 - 2²⁶ = 1211054335279 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 (1211121444133) 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, 146940971 + ... + 146949212.

It is an arithmetic number, because the mean of its divisors is an integer number (163549887396).

Almost surely, 2^{1211121444143} is an apocalyptic number.

1211121444143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1211121444143 is a deficient number, since it is larger than the sum of its proper divisors (97277655025).

1211121444143 is a wasteful number, since it uses less digits than its factorization.

1211121444143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293890513.

The product of its digits is 3072, while the sum is 29.

Adding to 1211121444143 its reverse (3414441211121), we get a palindrome (4625562655264).

The spelling of 1211121444143 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, four hundred forty-four thousand, one hundred forty-three".