20120001010221 has 8 divisors (see below), whose sum is σ = 30659049158464. Its totient is φ = 11497143434400.

The previous prime is 20120001010211. The next prime is 20120001010261. The reversal of 20120001010221 is 12201010002102.

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

It is not a de Polignac number, because 20120001010221 - 2¹⁸ = 20120000748077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120001010197 and 20120001010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120001010211) 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, 479047643080 + ... + 479047643121.

It is an arithmetic number, because the mean of its divisors is an integer number (3832381144808).

Almost surely, 2^{20120001010221} is an apocalyptic number.

20120001010221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20120001010221 is a deficient number, since it is larger than the sum of its proper divisors (10539048148243).

20120001010221 is an equidigital number, since it uses as much as digits as its factorization.

20120001010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958095286211.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20120001010221 its reverse (12201010002102), we get a palindrome (32321011012323).

The spelling of 20120001010221 in words is "twenty trillion, one hundred twenty billion, one million, ten thousand, two hundred twenty-one".