221222021011101 has 48 divisors (see below), whose sum is σ = 351481938679872. Its totient is φ = 134070619969440.

The previous prime is 221222021011063. The next prime is 221222021011129. The reversal of 221222021011101 is 101110120222122.

221222021011101 is a `hidden beast` number, since 2 + 212 + 220 + 210 + 11 + 10 + 1 = 666.

It is not a de Polignac number, because 221222021011101 - 2⁶ = 221222021011037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222021011151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 533612971 + ... + 534027383.

It is an arithmetic number, because the mean of its divisors is an integer number (7322540389164).

Almost surely, 2^{221222021011101} is an apocalyptic number.

It is an amenable number.

221222021011101 is a deficient number, since it is larger than the sum of its proper divisors (130259917668771).

221222021011101 is a wasteful number, since it uses less digits than its factorization.

221222021011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459015 (or 458990 counting only the distinct ones).

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

Adding to 221222021011101 its reverse (101110120222122), we get a palindrome (322332141233223).

The spelling of 221222021011101 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, twenty-one million, eleven thousand, one hundred one".