222121002101 has 2 divisors, whose sum is σ = 222121002102. Its totient is φ = 222121002100.

The previous prime is 222121002041. The next prime is 222121002109. The reversal of 222121002101 is 101200121222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189586222225 + 32534779876 = 435415^2 + 180374^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121002101 - 2¹⁸ = 222120739957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121002109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060501050 + 111060501051.

It is an arithmetic number, because the mean of its divisors is an integer number (111060501051).

Almost surely, 2^222121002101 is an apocalyptic number.

It is an amenable number.

222121002101 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121002101 is an equidigital number, since it uses as much as digits as its factorization.

222121002101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222121002101 its reverse (101200121222), we get a palindrome (323321123323).

The spelling of 222121002101 in words is "two hundred twenty-two billion, one hundred twenty-one million, two thousand, one hundred one".