1020200102111 has 2 divisors, whose sum is σ = 1020200102112. Its totient is φ = 1020200102110.

The previous prime is 1020200102107. The next prime is 1020200102147. The reversal of 1020200102111 is 1112010020201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020200102111 - 2² = 1020200102107 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020200102092 and 1020200102101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020200102011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510100051055 + 510100051056.

It is an arithmetic number, because the mean of its divisors is an integer number (510100051056).

Almost surely, 2^{1020200102111} is an apocalyptic number.

1020200102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020200102111 is an equidigital number, since it uses as much as digits as its factorization.

1020200102111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020200102111 its reverse (1112010020201), we get a palindrome (2132210122312).

The spelling of 1020200102111 in words is "one trillion, twenty billion, two hundred million, one hundred two thousand, one hundred eleven".