20202211191 has 8 divisors (see below), whose sum is σ = 26937129600. Its totient is φ = 13467716792.

The previous prime is 20202211121. The next prime is 20202211213. The reversal of 20202211191 is 19111220202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20202211191 - 2²² = 20198016887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202211121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30160 + ... + 203258.

It is an arithmetic number, because the mean of its divisors is an integer number (3367141200).

Almost surely, 2^20202211191 is an apocalyptic number.

20202211191 is a deficient number, since it is larger than the sum of its proper divisors (6734918409).

20202211191 is a wasteful number, since it uses less digits than its factorization.

20202211191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212005.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 20202211191 its reverse (19111220202), we get a palindrome (39313431393).

The spelling of 20202211191 in words is "twenty billion, two hundred two million, two hundred eleven thousand, one hundred ninety-one".