101000201123 has 2 divisors, whose sum is σ = 101000201124. Its totient is φ = 101000201122.

The previous prime is 101000201111. The next prime is 101000201147. The reversal of 101000201123 is 321102000101.

It is a weak prime.

It is an emirp because it is prime and its reverse (321102000101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101000201123 - 2⁶ = 101000201059 is a prime.

It is a super-2 number, since 2×101000201123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101000201023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500100561 + 50500100562.

It is an arithmetic number, because the mean of its divisors is an integer number (50500100562).

Almost surely, 2^101000201123 is an apocalyptic number.

101000201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101000201123 is an equidigital number, since it uses as much as digits as its factorization.

101000201123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 101000201123 its reverse (321102000101), we get a palindrome (422102201224).

The spelling of 101000201123 in words is "one hundred one billion, two hundred one thousand, one hundred twenty-three".