102121122223 has 2 divisors, whose sum is σ = 102121122224. Its totient is φ = 102121122222.

The previous prime is 102121122209. The next prime is 102121122251. The reversal of 102121122223 is 322221121201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102121122223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102121122223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102121122023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060561111 + 51060561112.

It is an arithmetic number, because the mean of its divisors is an integer number (51060561112).

Almost surely, 2^102121122223 is an apocalyptic number.

102121122223 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121122223 is an equidigital number, since it uses as much as digits as its factorization.

102121122223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 102121122223 its reverse (322221121201), we get a palindrome (424342243424).

The spelling of 102121122223 in words is "one hundred two billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".