20021010212201 has 24 divisors (see below), whose sum is σ = 20528585128224. Its totient is φ = 19524841887680.

The previous prime is 20021010212167. The next prime is 20021010212221. The reversal of 20021010212201 is 10221201012002.

It is not a de Polignac number, because 20021010212201 - 2¹⁰ = 20021010211177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021010212221) 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, 749191826 + ... + 749218548.

It is an arithmetic number, because the mean of its divisors is an integer number (855357713676).

Almost surely, 2^{20021010212201} is an apocalyptic number.

It is an amenable number.

20021010212201 is a deficient number, since it is larger than the sum of its proper divisors (507574916023).

20021010212201 is a wasteful number, since it uses less digits than its factorization.

20021010212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28549 (or 28490 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021010212201 its reverse (10221201012002), we get a palindrome (30242211224203).

The spelling of 20021010212201 in words is "twenty trillion, twenty-one billion, ten million, two hundred twelve thousand, two hundred one".