1011210020111 has 2 divisors, whose sum is σ = 1011210020112. Its totient is φ = 1011210020110.

The previous prime is 1011210020053. The next prime is 1011210020113. The reversal of 1011210020111 is 1110200121101.

1011210020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011210020111 - 2⁶ = 1011210020047 is a prime.

Together with 1011210020113, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011210020092 and 1011210020101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011210020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505605010055 + 505605010056.

It is an arithmetic number, because the mean of its divisors is an integer number (505605010056).

Almost surely, 2^{1011210020111} is an apocalyptic number.

1011210020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011210020111 is an equidigital number, since it uses as much as digits as its factorization.

1011210020111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1011210020111 its reverse (1110200121101), we get a palindrome (2121410141212).

The spelling of 1011210020111 in words is "one trillion, eleven billion, two hundred ten million, twenty thousand, one hundred eleven".