11221212220101 has 24 divisors (see below), whose sum is σ = 17455337812640. Its totient is φ = 6905314367136.

The previous prime is 11221212220069. The next prime is 11221212220103. The reversal of 11221212220101 is 10102221212211.

11221212220101 is a `hidden beast` number, since 1 + 1 + 221 + 212 + 220 + 10 + 1 = 666.

It is not a de Polignac number, because 11221212220101 - 2⁵ = 11221212220069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221212220103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25915950 + ... + 26345376.

Almost surely, 2^{11221212220101} is an apocalyptic number.

It is an amenable number.

11221212220101 is a deficient number, since it is larger than the sum of its proper divisors (6234125592539).

11221212220101 is a wasteful number, since it uses less digits than its factorization.

11221212220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652785 (or 652782 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11221212220101 its reverse (10102221212211), we get a palindrome (21323433432312).

The spelling of 11221212220101 in words is "eleven trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty thousand, one hundred one".