102211102121 has 2 divisors, whose sum is σ = 102211102122. Its totient is φ = 102211102120.

The previous prime is 102211102117. The next prime is 102211102139. The reversal of 102211102121 is 121201112201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100974595225 + 1236506896 = 317765^2 + 35164^2 .

It is a cyclic number.

It is not a de Polignac number, because 102211102121 - 2² = 102211102117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102211102096 and 102211102105.

It is not a weakly prime, because it can be changed into another prime (102211102111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105551060 + 51105551061.

It is an arithmetic number, because the mean of its divisors is an integer number (51105551061).

Almost surely, 2^102211102121 is an apocalyptic number.

It is an amenable number.

102211102121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211102121 is an equidigital number, since it uses as much as digits as its factorization.

102211102121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102211102121 its reverse (121201112201), we get a palindrome (223412214322).

The spelling of 102211102121 in words is "one hundred two billion, two hundred eleven million, one hundred two thousand, one hundred twenty-one".