20102112221193 has 12 divisors (see below), whose sum is σ = 30111805961328. Its totient is φ = 13401408147300.

The previous prime is 20102112221179. The next prime is 20102112221203. The reversal of 20102112221193 is 39112221120102.

It is not a de Polignac number, because 20102112221193 - 2⁵ = 20102112221161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20102112221173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41362370583 + ... + 41362371068.

It is an arithmetic number, because the mean of its divisors is an integer number (2509317163444).

Almost surely, 2^{20102112221193} is an apocalyptic number.

It is an amenable number.

20102112221193 is a deficient number, since it is larger than the sum of its proper divisors (10009693740135).

20102112221193 is an frugal number, since it uses more digits than its factorization.

20102112221193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82724741666 (or 82724741654 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 20102112221193 its reverse (39112221120102), we get a palindrome (59214333341295).

The spelling of 20102112221193 in words is "twenty trillion, one hundred two billion, one hundred twelve million, two hundred twenty-one thousand, one hundred ninety-three".