10102222121 has 2 divisors, whose sum is σ = 10102222122. Its totient is φ = 10102222120.

The previous prime is 10102222099. The next prime is 10102222153. The reversal of 10102222121 is 12122220101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9304724521 + 797497600 = 96461^2 + 28240^2 .

It is a cyclic number.

It is not a de Polignac number, because 10102222121 - 2¹⁰ = 10102221097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10102222096 and 10102222105.

It is not a weakly prime, because it can be changed into another prime (10102222021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051111060 + 5051111061.

It is an arithmetic number, because the mean of its divisors is an integer number (5051111061).

Almost surely, 2^10102222121 is an apocalyptic number.

It is an amenable number.

10102222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10102222121 is an equidigital number, since it uses as much as digits as its factorization.

10102222121 is an evil number, because the sum of its binary digits is even.

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

Adding to 10102222121 its reverse (12122220101), we get a palindrome (22224442222).

The spelling of 10102222121 in words is "ten billion, one hundred two million, two hundred twenty-two thousand, one hundred twenty-one".