11212202020091 has 2 divisors, whose sum is σ = 11212202020092. Its totient is φ = 11212202020090.

The previous prime is 11212202020057. The next prime is 11212202020109. The reversal of 11212202020091 is 19002020221211.

11212202020091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11212202020109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11212202020091 - 2³⁰ = 11211128278267 is a prime.

It is not a weakly prime, because it can be changed into another prime (11212202020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606101010045 + 5606101010046.

It is an arithmetic number, because the mean of its divisors is an integer number (5606101010046).

Almost surely, 2^{11212202020091} is an apocalyptic number.

11212202020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212202020091 is an equidigital number, since it uses as much as digits as its factorization.

11212202020091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11212202020091 in words is "eleven trillion, two hundred twelve billion, two hundred two million, twenty thousand, ninety-one".