10020012020221 has 24 divisors (see below), whose sum is σ = 11683093288896. Its totient is φ = 8568573773760.

The previous prime is 10020012020173. The next prime is 10020012020237. The reversal of 10020012020221 is 12202021002001.

It is a happy number.

It is not a de Polignac number, because 10020012020221 - 2¹⁷ = 10020011889149 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 (10020012020251) 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, 181064526 + ... + 181119856.

It is an arithmetic number, because the mean of its divisors is an integer number (486795553704).

Almost surely, 2^{10020012020221} is an apocalyptic number.

It is an amenable number.

10020012020221 is a deficient number, since it is larger than the sum of its proper divisors (1663081268675).

10020012020221 is an equidigital number, since it uses as much as digits as its factorization.

10020012020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63889 (or 63882 counting only the distinct ones).

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

Adding to 10020012020221 its reverse (12202021002001), we get a palindrome (22222033022222).

The spelling of 10020012020221 in words is "ten trillion, twenty billion, twelve million, twenty thousand, two hundred twenty-one".