20102210020221 has 16 divisors (see below), whose sum is σ = 31134102016128. Its totient is φ = 11298666052800.

The previous prime is 20102210020183. The next prime is 20102210020253. The reversal of 20102210020221 is 12202001220102.

It is not a de Polignac number, because 20102210020221 - 2⁹ = 20102210019709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20102210020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102210020021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7846294590 + ... + 7846297151.

It is an arithmetic number, because the mean of its divisors is an integer number (1945881376008).

Almost surely, 2^{20102210020221} is an apocalyptic number.

20102210020221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20102210020221 is a deficient number, since it is larger than the sum of its proper divisors (11031891995907).

20102210020221 is a wasteful number, since it uses less digits than its factorization.

20102210020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15692591812.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20102210020221 its reverse (12202001220102), we get a palindrome (32304211240323).

The spelling of 20102210020221 in words is "twenty trillion, one hundred two billion, two hundred ten million, twenty thousand, two hundred twenty-one".