1011321213 has 16 divisors (see below), whose sum is σ = 1542660096. Its totient is φ = 577298160.

The previous prime is 1011321209. The next prime is 1011321217. The reversal of 1011321213 is 3121231101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1011321209) and next prime (1011321217).

It is not a de Polignac number, because 1011321213 - 2² = 1011321209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011321192 and 1011321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011321217) 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 15 ways as a sum of consecutive naturals, for example, 3853 + ... + 45138.

It is an arithmetic number, because the mean of its divisors is an integer number (96416256).

Almost surely, 2^1011321213 is an apocalyptic number.

It is an amenable number.

1011321213 is a deficient number, since it is larger than the sum of its proper divisors (531338883).

1011321213 is an equidigital number, since it uses as much as digits as its factorization.

1011321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49984.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1011321213 is about 31801.2769083256. The cubic root of 1011321213 is about 1003.7595854705.

Adding to 1011321213 its reverse (3121231101), we get a palindrome (4132552314).

The spelling of 1011321213 in words is "one billion, eleven million, three hundred twenty-one thousand, two hundred thirteen".