1101321213 has 16 divisors (see below), whose sum is σ = 1569649536. Its totient is φ = 685160960.

The previous prime is 1101321127. The next prime is 1101321229. The reversal of 1101321213 is 3121231011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1101321213 - 2¹⁰ = 1101320189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101321192 and 1101321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101321233) 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, 191820 + ... + 197477.

It is an arithmetic number, because the mean of its divisors is an integer number (98103096).

Almost surely, 2^1101321213 is an apocalyptic number.

It is an amenable number.

1101321213 is a deficient number, since it is larger than the sum of its proper divisors (468328323).

1101321213 is a wasteful number, since it uses less digits than its factorization.

1101321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389364.

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

The square root of 1101321213 is about 33186.1599616467. The cubic root of 1101321213 is about 1032.6932415855.

Adding to 1101321213 its reverse (3121231011), we get a palindrome (4222552224).

The spelling of 1101321213 in words is "one billion, one hundred one million, three hundred twenty-one thousand, two hundred thirteen".