1100120022220 has 72 divisors (see below), whose sum is σ = 2393611182144. Its totient is φ = 424705569792.

The previous prime is 1100120022173. The next prime is 1100120022241. The reversal of 1100120022220 is 222200210011.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100120022220.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47639517 + ... + 47662603.

It is an arithmetic number, because the mean of its divisors is an integer number (33244599752).

Almost surely, 2^{1100120022220} is an apocalyptic number.

1100120022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100120022220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1196805591072).

1100120022220 is an abundant number, since it is smaller than the sum of its proper divisors (1293491159924).

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

1100120022220 is a wasteful number, since it uses less digits than its factorization.

1100120022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25987 (or 25956 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1100120022220 its reverse (222200210011), we get a palindrome (1322320232231).

The spelling of 1100120022220 in words is "one trillion, one hundred billion, one hundred twenty million, twenty-two thousand, two hundred twenty".