10212020000221 has 8 divisors (see below), whose sum is σ = 11010043054584. Its totient is φ = 9415780239360.

The previous prime is 10212020000209. The next prime is 10212020000251. The reversal of 10212020000221 is 12200002021201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 595111959225 + 9616908040996 = 771435^2 + 3101114^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212020000221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212020000251) 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, 445811476 + ... + 445834381.

It is an arithmetic number, because the mean of its divisors is an integer number (1376255381823).

Almost surely, 2^{10212020000221} is an apocalyptic number.

It is an amenable number.

10212020000221 is a deficient number, since it is larger than the sum of its proper divisors (798023054363).

10212020000221 is an equidigital number, since it uses as much as digits as its factorization.

10212020000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891646751.

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

Adding to 10212020000221 its reverse (12200002021201), we get a palindrome (22412022021422).

The spelling of 10212020000221 in words is "ten trillion, two hundred twelve billion, twenty million, two hundred twenty-one", and thus it is an aban number.