20102312221443 has 24 divisors (see below), whose sum is σ = 29720520648000. Its totient is φ = 13087189699584.

The previous prime is 20102312221427. The next prime is 20102312221447. The reversal of 20102312221443 is 34412221320102.

20102312221443 is a `hidden beast` number, since 20 + 102 + 312 + 221 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 20102312221443 - 2⁴ = 20102312221427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102312221447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52731228 + ... + 53111081.

It is an arithmetic number, because the mean of its divisors is an integer number (1238355027000).

Almost surely, 2^{20102312221443} is an apocalyptic number.

20102312221443 is a deficient number, since it is larger than the sum of its proper divisors (9618208426557).

20102312221443 is a wasteful number, since it uses less digits than its factorization.

20102312221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105842811 (or 105842808 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20102312221443 its reverse (34412221320102), we get a palindrome (54514533541545).

The spelling of 20102312221443 in words is "twenty trillion, one hundred two billion, three hundred twelve million, two hundred twenty-one thousand, four hundred forty-three".