102212423 has 2 divisors, whose sum is σ = 102212424. Its totient is φ = 102212422.

The previous prime is 102212417. The next prime is 102212479. The reversal of 102212423 is 324212201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102212423 - 2¹⁸ = 101950279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102212323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106211 + 51106212.

It is an arithmetic number, because the mean of its divisors is an integer number (51106212).

Almost surely, 2^102212423 is an apocalyptic number.

102212423 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212423 is an equidigital number, since it uses as much as digits as its factorization.

102212423 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 17.

The square root of 102212423 is about 10110.0159742703. The cubic root of 102212423 is about 467.5569976356.

Adding to 102212423 its reverse (324212201), we get a palindrome (426424624).

The spelling of 102212423 in words is "one hundred two million, two hundred twelve thousand, four hundred twenty-three".