221111202111122 has 4 divisors (see below), whose sum is σ = 331666803166686. Its totient is φ = 110555601055560.

The previous prime is 221111202111097. The next prime is 221111202111127.

It is a happy number.

221111202111122 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 112716888146041 + 108394313965081 = 10616821^2 + 10411259^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221111202111094 and 221111202111103.

It is not an unprimeable number, because it can be changed into a prime (221111202111127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55277800527779 + ... + 55277800527782.

Almost surely, 2^{221111202111122} is an apocalyptic number.

221111202111122 is a deficient number, since it is larger than the sum of its proper divisors (110555601055564).

221111202111122 is a wasteful number, since it uses less digits than its factorization.

221111202111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110555601055563.

The product of its (nonzero) digits is 64, while the sum is 20.

It can be divided in two parts, 22111120 and 2111122, that added together give a palindrome (24222242).

The spelling of 221111202111122 in words is "two hundred twenty-one trillion, one hundred eleven billion, two hundred two million, one hundred eleven thousand, one hundred twenty-two".