20002021010221 has 8 divisors (see below), whose sum is σ = 20505746556288. Its totient is φ = 19499051244000.

The previous prime is 20002021010173. The next prime is 20002021010261. The reversal of 20002021010221 is 12201012020002.

It is a happy number.

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 20002021010221 - 2⁹ = 20002021009709 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 (20002021010261) 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, 188891365 + ... + 188997226.

It is an arithmetic number, because the mean of its divisors is an integer number (2563218319536).

Almost surely, 2^{20002021010221} is an apocalyptic number.

It is an amenable number.

20002021010221 is a deficient number, since it is larger than the sum of its proper divisors (503725546067).

20002021010221 is a wasteful number, since it uses less digits than its factorization.

20002021010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377889923.

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

Adding to 20002021010221 its reverse (12201012020002), we get a palindrome (32203033030223).

The spelling of 20002021010221 in words is "twenty trillion, two billion, twenty-one million, ten thousand, two hundred twenty-one".