11111221202222 has 8 divisors (see below), whose sum is σ = 16708813748616. Its totient is φ = 5541616619352.

The previous prime is 11111221202209. The next prime is 11111221202227. The reversal of 11111221202222 is 22220212211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11111221202194 and 11111221202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111221202227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6996989888 + ... + 6996991475.

It is an arithmetic number, because the mean of its divisors is an integer number (2088601718577).

Almost surely, 2^{11111221202222} is an apocalyptic number.

11111221202222 is a deficient number, since it is larger than the sum of its proper divisors (5597592546394).

11111221202222 is a wasteful number, since it uses less digits than its factorization.

11111221202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13993981762.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11111221202222 its reverse (22220212211111), we get a palindrome (33331433413333).

The spelling of 11111221202222 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-two".