11021221010101 has 4 divisors (see below), whose sum is σ = 11176449475104. Its totient is φ = 10865992545100.

The previous prime is 11021221010083. The next prime is 11021221010143. The reversal of 11021221010101 is 10101012212011.

It is a happy number.

11021221010101 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 11021221010101 - 2⁴³ = 2225127987893 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 (11021921010101) 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, 77614232395 + ... + 77614232536.

It is an arithmetic number, because the mean of its divisors is an integer number (2794112368776).

Almost surely, 2^{11021221010101} is an apocalyptic number.

It is an amenable number.

11021221010101 is a deficient number, since it is larger than the sum of its proper divisors (155228465003).

11021221010101 is an equidigital number, since it uses as much as digits as its factorization.

11021221010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155228465002.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11021221010101 its reverse (10101012212011), we get a palindrome (21122233222112).

The spelling of 11021221010101 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, ten thousand, one hundred one".