11221122121022 has 16 divisors (see below), whose sum is σ = 18361901845872. Its totient is φ = 5100491819520.

The previous prime is 11221122120977. The next prime is 11221122121063. The reversal of 11221122121022 is 22012122112211.

It is a junction number, because it is equal to n+sod(n) for n = 11221122120985 and 11221122121003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6849758 + ... + 8328350.

It is an arithmetic number, because the mean of its divisors is an integer number (1147618865367).

Almost surely, 2^{11221122121022} is an apocalyptic number.

11221122121022 is a deficient number, since it is larger than the sum of its proper divisors (7140779724850).

11221122121022 is a wasteful number, since it uses less digits than its factorization.

11221122121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823563.

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

Adding to 11221122121022 its reverse (22012122112211), we get a palindrome (33233244233233).

The spelling of 11221122121022 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, twenty-two".