102202222021 has 4 divisors (see below), whose sum is σ = 108214117452. Its totient is φ = 96190326592.

The previous prime is 102202221973. The next prime is 102202222069. The reversal of 102202222021 is 120222202201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (102202221973) and next prime (102202222069).

It can be written as a sum of positive squares in 2 ways, for example, as 89694260100 + 12507961921 = 299490^2 + 111839^2 .

It is a cyclic number.

It is not a de Polignac number, because 102202222021 - 2¹³ = 102202213829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202221986 and 102202222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202222321) 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, 3005947690 + ... + 3005947723.

It is an arithmetic number, because the mean of its divisors is an integer number (27053529363).

Almost surely, 2^102202222021 is an apocalyptic number.

It is an amenable number.

102202222021 is a deficient number, since it is larger than the sum of its proper divisors (6011895431).

102202222021 is an equidigital number, since it uses as much as digits as its factorization.

102202222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011895430.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 102202222021 its reverse (120222202201), we get a palindrome (222424424222).

The spelling of 102202222021 in words is "one hundred two billion, two hundred two million, two hundred twenty-two thousand, twenty-one".