1011230121321 has 12 divisors (see below), whose sum is σ = 1669332263872. Its totient is φ = 577845783576.

The previous prime is 1011230121281. The next prime is 1011230121347. The reversal of 1011230121321 is 1231210321101.

1011230121321 is a `hidden beast` number, since 10 + 1 + 12 + 301 + 21 + 321 = 666.

1011230121321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011230121321 - 2¹⁰ = 1011230120297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011230121294 and 1011230121303.

It is not an unprimeable number, because it can be changed into a prime (1011230121721) 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, 8025635821 + ... + 8025635946.

Almost surely, 2^{1011230121321} is an apocalyptic number.

It is an amenable number.

1011230121321 is a deficient number, since it is larger than the sum of its proper divisors (658102142551).

1011230121321 is a wasteful number, since it uses less digits than its factorization.

1011230121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051271780 (or 16051271777 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1011230121321 its reverse (1231210321101), we get a palindrome (2242440442422).

The spelling of 1011230121321 in words is "one trillion, eleven billion, two hundred thirty million, one hundred twenty-one thousand, three hundred twenty-one".