2123202023191 has 4 divisors (see below), whose sum is σ = 2172578814472. Its totient is φ = 2073825231912.

The previous prime is 2123202023179. The next prime is 2123202023197. The reversal of 2123202023191 is 1913202023212.

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 2123202023191 - 2¹⁹ = 2123201498903 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 (2123202023197) 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, 24688395576 + ... + 24688395661.

It is an arithmetic number, because the mean of its divisors is an integer number (543144703618).

Almost surely, 2^{2123202023191} is an apocalyptic number.

2123202023191 is a deficient number, since it is larger than the sum of its proper divisors (49376791281).

2123202023191 is an equidigital number, since it uses as much as digits as its factorization.

2123202023191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49376791280.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 2123202023191 in words is "two trillion, one hundred twenty-three billion, two hundred two million, twenty-three thousand, one hundred ninety-one".