20211012020221 has 8 divisors (see below), whose sum is σ = 23345340087744. Its totient is φ = 17292844509120.

The previous prime is 20211012020209. The next prime is 20211012020263. The reversal of 20211012020221 is 12202021011202.

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 20211012020221 - 2²⁹ = 20210475149309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20211012020195 and 20211012020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211012020201) 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, 54040138905 + ... + 54040139278.

It is an arithmetic number, because the mean of its divisors is an integer number (2918167510968).

Almost surely, 2^{20211012020221} is an apocalyptic number.

It is an amenable number.

20211012020221 is a deficient number, since it is larger than the sum of its proper divisors (3134328067523).

20211012020221 is a wasteful number, since it uses less digits than its factorization.

20211012020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108080278211.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211012020221 its reverse (12202021011202), we get a palindrome (32413033031423).

The spelling of 20211012020221 in words is "twenty trillion, two hundred eleven billion, twelve million, twenty thousand, two hundred twenty-one".