2020011111091 has 2 divisors, whose sum is σ = 2020011111092. Its totient is φ = 2020011111090.

The previous prime is 2020011111071. The next prime is 2020011111103. The reversal of 2020011111091 is 1901111100202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020011111091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020011111061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010005555545 + 1010005555546.

It is an arithmetic number, because the mean of its divisors is an integer number (1010005555546).

Almost surely, 2^{2020011111091} is an apocalyptic number.

2020011111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020011111091 is an equidigital number, since it uses as much as digits as its factorization.

2020011111091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 2020011111091 its reverse (1901111100202), we get a palindrome (3921122211293).

It can be divided in two parts, 20200111 and 11091, that added together give a palindrome (20211202).

The spelling of 2020011111091 in words is "two trillion, twenty billion, eleven million, one hundred eleven thousand, ninety-one".