202102013123111 has 2 divisors, whose sum is σ = 202102013123112. Its totient is φ = 202102013123110.

The previous prime is 202102013123069. The next prime is 202102013123287. The reversal of 202102013123111 is 111321310201202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202102013123111 - 2¹⁸ = 202102012860967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202102043123111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051006561555 + 101051006561556.

It is an arithmetic number, because the mean of its divisors is an integer number (101051006561556).

Almost surely, 2^{202102013123111} is an apocalyptic number.

202102013123111 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102013123111 is an equidigital number, since it uses as much as digits as its factorization.

202102013123111 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 20.

Adding to 202102013123111 its reverse (111321310201202), we get a palindrome (313423323324313).

The spelling of 202102013123111 in words is "two hundred two trillion, one hundred two billion, thirteen million, one hundred twenty-three thousand, one hundred eleven".