2043438801121 has 9 divisors (see below), whose sum is σ = 2064862473849. Its totient is φ = 2022235190784.

The previous prime is 2043438801097. The next prime is 2043438801139. The reversal of 2043438801121 is 1211088343402.

The square root of 2043438801121 is 1429489.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 222558441121 + 1820880360000 = 471761^2 + 1349400^2 .

It is not a de Polignac number, because 2043438801121 - 2¹⁵ = 2043438768353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043438901121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 138653065 + ... + 138667801.

It is an arithmetic number, because the mean of its divisors is an integer number (229429163761).

Almost surely, 2^{2043438801121} is an apocalyptic number.

2043438801121 is the 1429489-th square number.

2043438801121 is the 714745-th centered octagonal number.

It is an amenable number.

2043438801121 is a deficient number, since it is larger than the sum of its proper divisors (21423672728).

2043438801121 is an frugal number, since it uses more digits than its factorization.

2043438801121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29668 (or 14834 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 2043438801121 in words is "two trillion, forty-three billion, four hundred thirty-eight million, eight hundred one thousand, one hundred twenty-one".