1111251321 has 12 divisors (see below), whose sum is σ = 1606515300. Its totient is φ = 740199840.

The previous prime is 1111251313. The next prime is 1111251341. The reversal of 1111251321 is 1231521111.

It can be written as a sum of positive squares in 2 ways, for example, as 752679225 + 358572096 = 27435^2 + 18936^2 .

It is not a de Polignac number, because 1111251321 - 2³ = 1111251313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111251294 and 1111251303.

It is not an unprimeable number, because it can be changed into a prime (1111251301) 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, 41646 + ... + 62903.

It is an arithmetic number, because the mean of its divisors is an integer number (133876275).

Almost surely, 2^1111251321 is an apocalyptic number.

It is an amenable number.

1111251321 is a deficient number, since it is larger than the sum of its proper divisors (495263979).

1111251321 is a wasteful number, since it uses less digits than its factorization.

1111251321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105736 (or 105733 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 1111251321 is about 33335.4364153224. The cubic root of 1111251321 is about 1035.7877332913.

Adding to 1111251321 its reverse (1231521111), we get a palindrome (2342772432).

The spelling of 1111251321 in words is "one billion, one hundred eleven million, two hundred fifty-one thousand, three hundred twenty-one".