102023223121221 has 4 divisors (see below), whose sum is σ = 136030964161632. Its totient is φ = 68015482080812.

The previous prime is 102023223121151. The next prime is 102023223121241. The reversal of 102023223121221 is 122121322320201.

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 102023223121221 - 2²² = 102023218926917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102023223121191 and 102023223121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102023223121241) 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, 17003870520201 + ... + 17003870520206.

It is an arithmetic number, because the mean of its divisors is an integer number (34007741040408).

Almost surely, 2^{102023223121221} is an apocalyptic number.

It is an amenable number.

102023223121221 is a deficient number, since it is larger than the sum of its proper divisors (34007741040411).

102023223121221 is an equidigital number, since it uses as much as digits as its factorization.

102023223121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34007741040410.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 102023223121221 its reverse (122121322320201), we get a palindrome (224144545441422).

The spelling of 102023223121221 in words is "one hundred two trillion, twenty-three billion, two hundred twenty-three million, one hundred twenty-one thousand, two hundred twenty-one".