202001911123 has 2 divisors, whose sum is σ = 202001911124. Its totient is φ = 202001911122.

The previous prime is 202001911093. The next prime is 202001911129. The reversal of 202001911123 is 321119100202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202001911123 is a prime.

It is a super-2 number, since 2×202001911123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202001911094 and 202001911103.

It is not a weakly prime, because it can be changed into another prime (202001911129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101000955561 + 101000955562.

It is an arithmetic number, because the mean of its divisors is an integer number (101000955562).

Almost surely, 2^202001911123 is an apocalyptic number.

202001911123 is a deficient number, since it is larger than the sum of its proper divisors (1).

202001911123 is an equidigital number, since it uses as much as digits as its factorization.

202001911123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 202001911123 in words is "two hundred two billion, one million, nine hundred eleven thousand, one hundred twenty-three".