22019291211 has 4 divisors (see below), whose sum is σ = 29359054952. Its totient is φ = 14679527472.

The previous prime is 22019291209. The next prime is 22019291219. The reversal of 22019291211 is 11219291022.

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

It is not a de Polignac number, because 22019291211 - 2¹ = 22019291209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22019291219) 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, 3669881866 + ... + 3669881871.

It is an arithmetic number, because the mean of its divisors is an integer number (7339763738).

Almost surely, 2^22019291211 is an apocalyptic number.

22019291211 is a deficient number, since it is larger than the sum of its proper divisors (7339763741).

22019291211 is an equidigital number, since it uses as much as digits as its factorization.

22019291211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339763740.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 22019291211 in words is "twenty-two billion, nineteen million, two hundred ninety-one thousand, two hundred eleven".