101220221222123 has 2 divisors, whose sum is σ = 101220221222124. Its totient is φ = 101220221222122.

The previous prime is 101220221222111. The next prime is 101220221222143. The reversal of 101220221222123 is 321222122022101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101220221222123 - 2¹⁴ = 101220221205739 is a prime.

It is not a weakly prime, because it can be changed into another prime (101220221222143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610110611061 + 50610110611062.

It is an arithmetic number, because the mean of its divisors is an integer number (50610110611062).

Almost surely, 2^{101220221222123} is an apocalyptic number.

101220221222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220221222123 is an equidigital number, since it uses as much as digits as its factorization.

101220221222123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 101220221222123 its reverse (321222122022101), we get a palindrome (422442343244224).

The spelling of 101220221222123 in words is "one hundred one trillion, two hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-three".