101211202123 has 2 divisors, whose sum is σ = 101211202124. Its totient is φ = 101211202122.

The previous prime is 101211202121. The next prime is 101211202133. The reversal of 101211202123 is 321202112101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101211202123 - 2¹ = 101211202121 is a prime.

It is a super-3 number, since 3×101211202123³ (a number of 34 digits) contains 333 as substring.

Together with 101211202121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 101211202097 and 101211202106.

It is not a weakly prime, because it can be changed into another prime (101211202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50605601061 + 50605601062.

It is an arithmetic number, because the mean of its divisors is an integer number (50605601062).

Almost surely, 2^101211202123 is an apocalyptic number.

101211202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101211202123 is an equidigital number, since it uses as much as digits as its factorization.

101211202123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 101211202123 its reverse (321202112101), we get a palindrome (422413314224).

The spelling of 101211202123 in words is "one hundred one billion, two hundred eleven million, two hundred two thousand, one hundred twenty-three".