102020022191 has 8 divisors (see below), whose sum is σ = 103783309344. Its totient is φ = 100265801440.

The previous prime is 102020022149. The next prime is 102020022193. The reversal of 102020022191 is 191220020201.

It is a happy number.

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 102020022191 - 2⁶ = 102020022127 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 (102020022193) 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, 2243900 + ... + 2288913.

It is an arithmetic number, because the mean of its divisors is an integer number (12972913668).

Almost surely, 2^102020022191 is an apocalyptic number.

102020022191 is a deficient number, since it is larger than the sum of its proper divisors (1763287153).

102020022191 is an equidigital number, since it uses as much as digits as its factorization.

102020022191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533201.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 102020022191 its reverse (191220020201), we get a palindrome (293240042392).

The spelling of 102020022191 in words is "one hundred two billion, twenty million, twenty-two thousand, one hundred ninety-one".