212030111191 has 4 divisors (see below), whose sum is σ = 212039033752. Its totient is φ = 212021188632.

The previous prime is 212030111179. The next prime is 212030111197. The reversal of 212030111191 is 191111030212.

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

It is a cyclic number.

It is not a de Polignac number, because 212030111191 - 2¹⁵ = 212030078423 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 (212030111197) 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, 4425540 + ... + 4473193.

It is an arithmetic number, because the mean of its divisors is an integer number (53009758438).

Almost surely, 2^212030111191 is an apocalyptic number.

212030111191 is a deficient number, since it is larger than the sum of its proper divisors (8922561).

212030111191 is an equidigital number, since it uses as much as digits as its factorization.

212030111191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8922560.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 212030111191 in words is "two hundred twelve billion, thirty million, one hundred eleven thousand, one hundred ninety-one".