101213321 has 4 divisors (see below), whose sum is σ = 110414544. Its totient is φ = 92012100.

The previous prime is 101213311. The next prime is 101213327. The reversal of 101213321 is 123312101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101213321 - 2²⁶ = 34104457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101213296 and 101213305.

It is not an unprimeable number, because it can be changed into a prime (101213327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600595 + ... + 4600616.

It is an arithmetic number, because the mean of its divisors is an integer number (27603636).

Almost surely, 2^101213321 is an apocalyptic number.

101213321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101213321 is a deficient number, since it is larger than the sum of its proper divisors (9201223).

101213321 is an equidigital number, since it uses as much as digits as its factorization.

101213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9201222.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 101213321 is about 10060.4831394919. The cubic root of 101213321 is about 466.0285875246.

Adding to 101213321 its reverse (123312101), we get a palindrome (224525422).

The spelling of 101213321 in words is "one hundred one million, two hundred thirteen thousand, three hundred twenty-one".