101212222123 has 2 divisors, whose sum is σ = 101212222124. Its totient is φ = 101212222122.

The previous prime is 101212222081. The next prime is 101212222213. The reversal of 101212222123 is 321222212101.

Together with next prime (101212222213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212222123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101212222123.

It is not a weakly prime, because it can be changed into another prime (101212222823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606111061 + 50606111062.

It is an arithmetic number, because the mean of its divisors is an integer number (50606111062).

Almost surely, 2^101212222123 is an apocalyptic number.

101212222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101212222123 is an equidigital number, since it uses as much as digits as its factorization.

101212222123 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 101212222123 its reverse (321222212101), we get a palindrome (422434434224).

The spelling of 101212222123 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-three".