101211302123 has 2 divisors, whose sum is σ = 101211302124. Its totient is φ = 101211302122.

The previous prime is 101211302111. The next prime is 101211302161. The reversal of 101211302123 is 321203112101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101211302123 - 2²⁸ = 100942866667 is a prime.

It is not a weakly prime, because it can be changed into another prime (101211304123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605651061 + 50605651062.

It is an arithmetic number, because the mean of its divisors is an integer number (50605651062).

Almost surely, 2^101211302123 is an apocalyptic number.

101211302123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211302123 is an equidigital number, since it uses as much as digits as its factorization.

101211302123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101211302123 its reverse (321203112101), we get a palindrome (422414414224).

The spelling of 101211302123 in words is "one hundred one billion, two hundred eleven million, three hundred two thousand, one hundred twenty-three".