11111022122222 has 16 divisors (see below), whose sum is σ = 18361689127344. Its totient is φ = 5000460000000.

The previous prime is 11111022122191. The next prime is 11111022122227. The reversal of 11111022122222 is 22222122011111.

It is a junction number, because it is equal to n+sod(n) for n = 11111022122194 and 11111022122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111022122227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2500227779 + ... + 2500232222.

It is an arithmetic number, because the mean of its divisors is an integer number (1147605570459).

Almost surely, 2^{11111022122222} is an apocalyptic number.

11111022122222 is a deficient number, since it is larger than the sum of its proper divisors (7250667005122).

11111022122222 is a wasteful number, since it uses less digits than its factorization.

11111022122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000460115.

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

Adding to 11111022122222 its reverse (22222122011111), we get a palindrome (33333144133333).

The spelling of 11111022122222 in words is "eleven trillion, one hundred eleven billion, twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".