101221211323 has 4 divisors (see below), whose sum is σ = 101414751448. Its totient is φ = 101027671200.

The previous prime is 101221211279. The next prime is 101221211341. The reversal of 101221211323 is 323112122101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323112122101 = 1741 ⋅185589961.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101221211323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101221211323.

It is not an unprimeable number, because it can be changed into a prime (101221217323) 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, 96769278 + ... + 96770323.

It is an arithmetic number, because the mean of its divisors is an integer number (25353687862).

Almost surely, 2^101221211323 is an apocalyptic number.

101221211323 is a deficient number, since it is larger than the sum of its proper divisors (193540125).

101221211323 is an equidigital number, since it uses as much as digits as its factorization.

101221211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193540124.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101221211323 its reverse (323112122101), we get a palindrome (424333333424).

The spelling of 101221211323 in words is "one hundred one billion, two hundred twenty-one million, two hundred eleven thousand, three hundred twenty-three".