20210201202021 has 8 divisors (see below), whose sum is σ = 26947083618144. Its totient is φ = 13473393126960.

The previous prime is 20210201202019. The next prime is 20210201202041. The reversal of 20210201202021 is 12020210201202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20210201202021 - 2¹ = 20210201202019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210201202041) 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, 17947806 + ... + 19040591.

It is an arithmetic number, because the mean of its divisors is an integer number (3368385452268).

Almost surely, 2^{20210201202021} is an apocalyptic number.

It is an amenable number.

20210201202021 is a deficient number, since it is larger than the sum of its proper divisors (6736882416123).

20210201202021 is a wasteful number, since it uses less digits than its factorization.

20210201202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37170531.

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

Adding to 20210201202021 its reverse (12020210201202), we get a palindrome (32230411403223).

The spelling of 20210201202021 in words is "twenty trillion, two hundred ten billion, two hundred one million, two hundred two thousand, twenty-one".