1321111030 has 16 divisors (see below), whose sum is σ = 2481391584. Its totient is φ = 505468480.

The previous prime is 1321111009. The next prime is 1321111049. The reversal of 1321111030 is 301111231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321111030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871751 + ... + 2872210.

It is an arithmetic number, because the mean of its divisors is an integer number (155086974).

Almost surely, 2^1321111030 is an apocalyptic number.

1321111030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321111030 is a deficient number, since it is larger than the sum of its proper divisors (1160280554).

1321111030 is a wasteful number, since it uses less digits than its factorization.

1321111030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743991.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1321111030 is about 36347.0910803052. The cubic root of 1321111030 is about 1097.2689910790.

Adding to 1321111030 its reverse (301111231), we get a palindrome (1622222261).

The spelling of 1321111030 in words is "one billion, three hundred twenty-one million, one hundred eleven thousand, thirty".