1122222111220 has 96 divisors (see below), whose sum is σ = 2821475865600. Its totient is φ = 366791652864.

The previous prime is 1122222111187. The next prime is 1122222111221. The reversal of 1122222111220 is 221112222211.

It is a super-2 number, since 2×1122222111220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122222111221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1428687 + ... + 2070166.

It is an arithmetic number, because the mean of its divisors is an integer number (29390373600).

Almost surely, 2^{1122222111220} is an apocalyptic number.

1122222111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122222111220 is an abundant number, since it is smaller than the sum of its proper divisors (1699253754380).

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

1122222111220 is a wasteful number, since it uses less digits than its factorization.

1122222111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498977 (or 3498975 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1122222111220 its reverse (221112222211), we get a palindrome (1343334333431).

The spelling of 1122222111220 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty".