11011220001222 has 16 divisors (see below), whose sum is σ = 25168502860032. Its totient is φ = 3146062857480.

The previous prime is 11011220001193. The next prime is 11011220001277. The reversal of 11011220001222 is 22210002211011.

It is a super-2 number, since 2×11011220001222² (a number of 27 digits) contains 22 as substring.

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, 131085952354 + ... + 131085952437.

It is an arithmetic number, because the mean of its divisors is an integer number (1573031428752).

Almost surely, 2^{11011220001222} is an apocalyptic number.

11011220001222 is an abundant number, since it is smaller than the sum of its proper divisors (14157282858810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11011220001222 is a wasteful number, since it uses less digits than its factorization.

11011220001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262171904803.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11011220001222 its reverse (22210002211011), we get a palindrome (33221222212233).

The spelling of 11011220001222 in words is "eleven trillion, eleven billion, two hundred twenty million, one thousand, two hundred twenty-two".