201143113121123 has 2 divisors, whose sum is σ = 201143113121124. Its totient is φ = 201143113121122.

The previous prime is 201143113121063. The next prime is 201143113121173. The reversal of 201143113121123 is 321121311341102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201143113121123 - 2⁶ = 201143113121059 is a prime.

It is a super-2 number, since 2×201143113121123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201143113121092 and 201143113121101.

It is not a weakly prime, because it can be changed into another prime (201143113121173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100571556560561 + 100571556560562.

It is an arithmetic number, because the mean of its divisors is an integer number (100571556560562).

Almost surely, 2^{201143113121123} is an apocalyptic number.

201143113121123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201143113121123 is an equidigital number, since it uses as much as digits as its factorization.

201143113121123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 201143113121123 its reverse (321121311341102), we get a palindrome (522264424462225).

The spelling of 201143113121123 in words is "two hundred one trillion, one hundred forty-three billion, one hundred thirteen million, one hundred twenty-one thousand, one hundred twenty-three".