10122221010221 has 4 divisors (see below), whose sum is σ = 10122248643744. Its totient is φ = 10122193376700.

The previous prime is 10122221010217. The next prime is 10122221010259. The reversal of 10122221010221 is 12201012222101.

10122221010221 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 10122221010221 - 2² = 10122221010217 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 10122221010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122221010211) 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, 13259825 + ... + 14002406.

It is an arithmetic number, because the mean of its divisors is an integer number (2530562160936).

Almost surely, 2^{10122221010221} is an apocalyptic number.

It is an amenable number.

10122221010221 is a deficient number, since it is larger than the sum of its proper divisors (27633523).

10122221010221 is an equidigital number, since it uses as much as digits as its factorization.

10122221010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27633522.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10122221010221 its reverse (12201012222101), we get a palindrome (22323233232322).

The spelling of 10122221010221 in words is "ten trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, two hundred twenty-one".