101211321 has 8 divisors (see below), whose sum is σ = 135919840. Its totient is φ = 66988512.

The previous prime is 101211307. The next prime is 101211343. The reversal of 101211321 is 123112101.

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

It is not a de Polignac number, because 101211321 - 2¹⁴ = 101194937 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 = 101211297 and 101211306.

It is not an unprimeable number, because it can be changed into a prime (101211371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120940 + ... + 121773.

It is an arithmetic number, because the mean of its divisors is an integer number (16989980).

Almost surely, 2^101211321 is an apocalyptic number.

It is an amenable number.

101211321 is a deficient number, since it is larger than the sum of its proper divisors (34708519).

101211321 is a wasteful number, since it uses less digits than its factorization.

101211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242855.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 101211321 is about 10060.3837401960. The cubic root of 101211321 is about 466.0255178914.

Adding to 101211321 its reverse (123112101), we get a palindrome (224323422).

The spelling of 101211321 in words is "one hundred one million, two hundred eleven thousand, three hundred twenty-one".