11020212191 has 2 divisors, whose sum is σ = 11020212192. Its totient is φ = 11020212190.

The previous prime is 11020212187. The next prime is 11020212221. The reversal of 11020212191 is 19121202011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11020212191 - 2² = 11020212187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11020212121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510106095 + 5510106096.

It is an arithmetic number, because the mean of its divisors is an integer number (5510106096).

Almost surely, 2^11020212191 is an apocalyptic number.

11020212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020212191 is an equidigital number, since it uses as much as digits as its factorization.

11020212191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 11020212191 in words is "eleven billion, twenty million, two hundred twelve thousand, one hundred ninety-one".