1020211011111 has 4 divisors (see below), whose sum is σ = 1360281348152. Its totient is φ = 680140674072.

The previous prime is 1020211011101. The next prime is 1020211011121. The reversal of 1020211011111 is 1111101120201.

1020211011111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1020211011101) and next prime (1020211011121).

It is not a de Polignac number, because 1020211011111 - 2⁷ = 1020211010983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020211011101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170035168516 + ... + 170035168521.

It is an arithmetic number, because the mean of its divisors is an integer number (340070337038).

Almost surely, 2^{1020211011111} is an apocalyptic number.

1020211011111 is a deficient number, since it is larger than the sum of its proper divisors (340070337041).

1020211011111 is an equidigital number, since it uses as much as digits as its factorization.

1020211011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340070337040.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1020211011111 its reverse (1111101120201), we get a palindrome (2131312131312).

The spelling of 1020211011111 in words is "one trillion, twenty billion, two hundred eleven million, eleven thousand, one hundred eleven".