102222222121121 has 4 divisors (see below), whose sum is σ = 102246497172144. Its totient is φ = 102197947070100.

The previous prime is 102222222121099. The next prime is 102222222121183. The reversal of 102222222121121 is 121121222222201.

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 102222222121121 - 2³⁴ = 102205042251937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102222222123121) 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, 12137519195 + ... + 12137527616.

It is an arithmetic number, because the mean of its divisors is an integer number (25561624293036).

Almost surely, 2^{102222222121121} is an apocalyptic number.

It is an amenable number.

102222222121121 is a deficient number, since it is larger than the sum of its proper divisors (24275051023).

102222222121121 is an equidigital number, since it uses as much as digits as its factorization.

102222222121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24275051022.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 102222222121121 its reverse (121121222222201), we get a palindrome (223343444343322).

The spelling of 102222222121121 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".