1011043121223 has 8 divisors (see below), whose sum is σ = 1391543220736. Its totient is φ = 652285884600.

The previous prime is 1011043121203. The next prime is 1011043121269. The reversal of 1011043121223 is 3221213401101.

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

It is not a de Polignac number, because 1011043121223 - 2¹⁴ = 1011043104839 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 1011043121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011043121203) 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, 5435715613 + ... + 5435715798.

It is an arithmetic number, because the mean of its divisors is an integer number (173942902592).

Almost surely, 2^{1011043121223} is an apocalyptic number.

1011043121223 is a deficient number, since it is larger than the sum of its proper divisors (380500099513).

1011043121223 is a wasteful number, since it uses less digits than its factorization.

1011043121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10871431445.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1011043121223 its reverse (3221213401101), we get a palindrome (4232256522324).

The spelling of 1011043121223 in words is "one trillion, eleven billion, forty-three million, one hundred twenty-one thousand, two hundred twenty-three".