1012211321 has 8 divisors (see below), whose sum is σ = 1131163488. Its totient is φ = 897748000.

The previous prime is 1012211267. The next prime is 1012211341. The reversal of 1012211321 is 1231122101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012211321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012211296 and 1012211305.

It is not an unprimeable number, because it can be changed into a prime (1012211341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121735 + ... + 1122636.

It is an arithmetic number, because the mean of its divisors is an integer number (141395436).

Almost surely, 2^1012211321 is an apocalyptic number.

1012211321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012211321 is a deficient number, since it is larger than the sum of its proper divisors (118952167).

1012211321 is a wasteful number, since it uses less digits than its factorization.

1012211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244423.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1012211321 is about 31815.2686771619. The cubic root of 1012211321 is about 1004.0539833436.

Adding to 1012211321 its reverse (1231122101), we get a palindrome (2243333422).

The spelling of 1012211321 in words is "one billion, twelve million, two hundred eleven thousand, three hundred twenty-one".