201001101020123 has 2 divisors, whose sum is σ = 201001101020124. Its totient is φ = 201001101020122.

The previous prime is 201001101020119. The next prime is 201001101020141. The reversal of 201001101020123 is 321020101100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201001101020123 - 2² = 201001101020119 is a prime.

It is a super-2 number, since 2×201001101020123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201001101020098 and 201001101020107.

It is not a weakly prime, because it can be changed into another prime (201001101020113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500550510061 + 100500550510062.

It is an arithmetic number, because the mean of its divisors is an integer number (100500550510062).

Almost surely, 2^{201001101020123} is an apocalyptic number.

201001101020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001101020123 is an equidigital number, since it uses as much as digits as its factorization.

201001101020123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201001101020123 its reverse (321020101100102), we get a palindrome (522021202120225).

The spelling of 201001101020123 in words is "two hundred one trillion, one billion, one hundred one million, twenty thousand, one hundred twenty-three".