11121220121222 has 16 divisors (see below), whose sum is σ = 16804184138640. Its totient is φ = 5519828252928.

The previous prime is 11121220121173. The next prime is 11121220121281. The reversal of 11121220121222 is 22212102212111.

It is a junction number, because it is equal to n+sod(n) for n = 11121220121194 and 11121220121203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7287029 + ... + 8680047.

It is an arithmetic number, because the mean of its divisors is an integer number (1050261508665).

Almost surely, 2^{11121220121222} is an apocalyptic number.

11121220121222 is a deficient number, since it is larger than the sum of its proper divisors (5682964017418).

11121220121222 is a wasteful number, since it uses less digits than its factorization.

11121220121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422295.

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

Adding to 11121220121222 its reverse (22212102212111), we get a palindrome (33333322333333).

The spelling of 11121220121222 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-two".