10211220110123 has 2 divisors, whose sum is σ = 10211220110124. Its totient is φ = 10211220110122.

The previous prime is 10211220110057. The next prime is 10211220110141. The reversal of 10211220110123 is 32101102211201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10211220110123 - 2²² = 10211215915819 is a prime.

It is a super-3 number, since 3×10211220110123³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (10211220110153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105610055061 + 5105610055062.

It is an arithmetic number, because the mean of its divisors is an integer number (5105610055062).

Almost surely, 2^{10211220110123} is an apocalyptic number.

10211220110123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211220110123 is an equidigital number, since it uses as much as digits as its factorization.

10211220110123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10211220110123 its reverse (32101102211201), we get a palindrome (42312322321324).

The spelling of 10211220110123 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, one hundred ten thousand, one hundred twenty-three".