202013201123 has 2 divisors, whose sum is σ = 202013201124. Its totient is φ = 202013201122.

The previous prime is 202013201113. The next prime is 202013201147. The reversal of 202013201123 is 321102310202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202013201123 - 2¹⁸ = 202012938979 is a prime.

It is a super-2 number, since 2×202013201123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202013201113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006600561 + 101006600562.

It is an arithmetic number, because the mean of its divisors is an integer number (101006600562).

Almost surely, 2^202013201123 is an apocalyptic number.

202013201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

202013201123 is an equidigital number, since it uses as much as digits as its factorization.

202013201123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202013201123 its reverse (321102310202), we get a palindrome (523115511325).

The spelling of 202013201123 in words is "two hundred two billion, thirteen million, two hundred one thousand, one hundred twenty-three".