221210101082123 has 2 divisors, whose sum is σ = 221210101082124. Its totient is φ = 221210101082122.

The previous prime is 221210101082101. The next prime is 221210101082129. The reversal of 221210101082123 is 321280101012122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221210101082123 - 2¹² = 221210101078027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221210101082092 and 221210101082101.

It is not a weakly prime, because it can be changed into another prime (221210101082129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605050541061 + 110605050541062.

It is an arithmetic number, because the mean of its divisors is an integer number (110605050541062).

Almost surely, 2^{221210101082123} is an apocalyptic number.

221210101082123 is a deficient number, since it is larger than the sum of its proper divisors (1).

221210101082123 is an equidigital number, since it uses as much as digits as its factorization.

221210101082123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

Adding to 221210101082123 its reverse (321280101012122), we get a palindrome (542490202094245).

The spelling of 221210101082123 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred one million, eighty-two thousand, one hundred twenty-three".