102222122102021 has 4 divisors (see below), whose sum is σ = 102222187052544. Its totient is φ = 102222057151500.

The previous prime is 102222122102011. The next prime is 102222122102041. The reversal of 102222122102021 is 120201221222201.

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 a de Polignac number, because none of the positive numbers 2^k-102222122102021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102222122101984 and 102222122102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102222122102011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30054335 + ... + 33282236.

It is an arithmetic number, because the mean of its divisors is an integer number (25555546763136).

Almost surely, 2^{102222122102021} is an apocalyptic number.

It is an amenable number.

102222122102021 is a deficient number, since it is larger than the sum of its proper divisors (64950523).

102222122102021 is an equidigital number, since it uses as much as digits as its factorization.

102222122102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64950522.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 102222122102021 its reverse (120201221222201), we get a palindrome (222423343324222).

The spelling of 102222122102021 in words is "one hundred two trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred two thousand, twenty-one".