210101012122123 has 2 divisors, whose sum is σ = 210101012122124. Its totient is φ = 210101012122122.

The previous prime is 210101012122097. The next prime is 210101012122201. The reversal of 210101012122123 is 321221210101012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210101012122123 - 2¹³ = 210101012113931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210101012122123.

It is not a weakly prime, because it can be changed into another prime (210101012122423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050506061061 + 105050506061062.

It is an arithmetic number, because the mean of its divisors is an integer number (105050506061062).

Almost surely, 2^{210101012122123} is an apocalyptic number.

210101012122123 is a deficient number, since it is larger than the sum of its proper divisors (1).

210101012122123 is an equidigital number, since it uses as much as digits as its factorization.

210101012122123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 210101012122123 its reverse (321221210101012), we get a palindrome (531322222223135).

The spelling of 210101012122123 in words is "two hundred ten trillion, one hundred one billion, twelve million, one hundred twenty-two thousand, one hundred twenty-three".