11221212012101 has 32 divisors (see below), whose sum is σ = 13987905431808. Its totient is φ = 8764583408640.

The previous prime is 11221212012089. The next prime is 11221212012107. The reversal of 11221212012101 is 10121021212211.

It is a cyclic number.

It is not a de Polignac number, because 11221212012101 - 2²² = 11221207817797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11221212012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221212012107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9223511 + ... + 10368971.

It is an arithmetic number, because the mean of its divisors is an integer number (437122044744).

Almost surely, 2^{11221212012101} is an apocalyptic number.

It is an amenable number.

11221212012101 is a deficient number, since it is larger than the sum of its proper divisors (2766693419707).

11221212012101 is a wasteful number, since it uses less digits than its factorization.

11221212012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146861.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221212012101 its reverse (10121021212211), we get a palindrome (21342233224312).

The spelling of 11221212012101 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, twelve thousand, one hundred one".