20102010020221 has 8 divisors (see below), whose sum is σ = 20489962244024. Its totient is φ = 19717100559360.

The previous prime is 20102010020207. The next prime is 20102010020233. The reversal of 20102010020221 is 12202001020102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 164766987225 + 19937243032996 = 405915^2 + 4465114^2 .

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 20102010020221 - 2¹⁹ = 20102009495933 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 (20102010020291) 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, 760677396 + ... + 760703821.

It is an arithmetic number, because the mean of its divisors is an integer number (2561245280503).

Almost surely, 2^{20102010020221} is an apocalyptic number.

It is an amenable number.

20102010020221 is a deficient number, since it is larger than the sum of its proper divisors (387952223803).

20102010020221 is a wasteful number, since it uses less digits than its factorization.

20102010020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521381471.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20102010020221 its reverse (12202001020102), we get a palindrome (32304011040323).

The spelling of 20102010020221 in words is "twenty trillion, one hundred two billion, ten million, twenty thousand, two hundred twenty-one".