10202220120221 has 4 divisors (see below), whose sum is σ = 10202276328000. Its totient is φ = 10202163912444.

The previous prime is 10202220120193. The next prime is 10202220120223. The reversal of 10202220120221 is 12202102220201.

It is a happy number.

10202220120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10202220120221 - 2¹⁴ = 10202220103837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10202220120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202220120223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27830741 + ... + 28194938.

It is an arithmetic number, because the mean of its divisors is an integer number (2550569082000).

Almost surely, 2^{10202220120221} is an apocalyptic number.

It is an amenable number.

10202220120221 is a deficient number, since it is larger than the sum of its proper divisors (56207779).

10202220120221 is an equidigital number, since it uses as much as digits as its factorization.

10202220120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56207778.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10202220120221 its reverse (12202102220201), we get a palindrome (22404322340422).

The spelling of 10202220120221 in words is "ten trillion, two hundred two billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".