11221111010101 has 4 divisors (see below), whose sum is σ = 11244537129600. Its totient is φ = 11197684890604.

The previous prime is 11221111010077. The next prime is 11221111010147. The reversal of 11221111010101 is 10101011112211.

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 11221111010101 - 2⁷ = 11221111009973 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 (11221111010201) 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, 11713059031 + ... + 11713059988.

It is an arithmetic number, because the mean of its divisors is an integer number (2811134282400).

Almost surely, 2^{11221111010101} is an apocalyptic number.

It is an amenable number.

11221111010101 is a deficient number, since it is larger than the sum of its proper divisors (23426119499).

11221111010101 is an equidigital number, since it uses as much as digits as its factorization.

11221111010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23426119498.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11221111010101 its reverse (10101011112211), we get a palindrome (21322122122312).

The spelling of 11221111010101 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, ten thousand, one hundred one".