221222021001111 has 12 divisors (see below), whose sum is σ = 344123143779688. Its totient is φ = 136136628308304.

The previous prime is 221222021001001. The next prime is 221222021001119. The reversal of 221222021001111 is 111100120222122.

221222021001111 is a `hidden beast` number, since 2 + 212 + 220 + 210 + 0 + 11 + 11 = 666.

It is not a de Polignac number, because 221222021001111 - 2³¹ = 221219873517463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222021001119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 945393252025 + ... + 945393252258.

Almost surely, 2^{221222021001111} is an apocalyptic number.

221222021001111 is a deficient number, since it is larger than the sum of its proper divisors (122901122778577).

221222021001111 is a wasteful number, since it uses less digits than its factorization.

221222021001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890786504302 (or 1890786504299 counting only the distinct ones).

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

Adding to 221222021001111 its reverse (111100120222122), we get a palindrome (332322141223233).

The spelling of 221222021001111 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, twenty-one million, one thousand, one hundred eleven".