1020012200111 has 2 divisors, whose sum is σ = 1020012200112. Its totient is φ = 1020012200110.

The previous prime is 1020012200099. The next prime is 1020012200147. The reversal of 1020012200111 is 1110022100201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020012200111 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020012200092 and 1020012200101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020012200411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510006100055 + 510006100056.

It is an arithmetic number, because the mean of its divisors is an integer number (510006100056).

Almost surely, 2^{1020012200111} is an apocalyptic number.

1020012200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020012200111 is an equidigital number, since it uses as much as digits as its factorization.

1020012200111 is an evil number, because the sum of its binary digits is even.

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

Adding to 1020012200111 its reverse (1110022100201), we get a palindrome (2130034300312).

The spelling of 1020012200111 in words is "one trillion, twenty billion, twelve million, two hundred thousand, one hundred eleven".