201121010002123 has 2 divisors, whose sum is σ = 201121010002124. Its totient is φ = 201121010002122.

The previous prime is 201121010002091. The next prime is 201121010002151. The reversal of 201121010002123 is 321200010121102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201121010002123 - 2⁵ = 201121010002091 is a prime.

It is a super-3 number, since 3×201121010002123³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201121010002097 and 201121010002106.

It is not a weakly prime, because it can be changed into another prime (201121010009123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560505001061 + 100560505001062.

It is an arithmetic number, because the mean of its divisors is an integer number (100560505001062).

Almost surely, 2^{201121010002123} is an apocalyptic number.

201121010002123 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121010002123 is an equidigital number, since it uses as much as digits as its factorization.

201121010002123 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 201121010002123 its reverse (321200010121102), we get a palindrome (522321020123225).

The spelling of 201121010002123 in words is "two hundred one trillion, one hundred twenty-one billion, ten million, two thousand, one hundred twenty-three".