1001121143 has 12 divisors (see below), whose sum is σ = 1160157912. Its totient is φ = 856571520.

The previous prime is 1001121133. The next prime is 1001121179. The reversal of 1001121143 is 3411211001.

It is not a de Polignac number, because 1001121143 - 2¹⁰ = 1001120119 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 (1001121133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154280 + ... + 160637.

It is an arithmetic number, because the mean of its divisors is an integer number (96679826).

Almost surely, 2^1001121143 is an apocalyptic number.

1001121143 is a deficient number, since it is larger than the sum of its proper divisors (159036769).

1001121143 is a wasteful number, since it uses less digits than its factorization.

1001121143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314962 (or 314945 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1001121143 is about 31640.4984632038. The cubic root of 1001121143 is about 1000.3735747579.

Adding to 1001121143 its reverse (3411211001), we get a palindrome (4412332144).

The spelling of 1001121143 in words is "one billion, one million, one hundred twenty-one thousand, one hundred forty-three".