1122101220 has 96 divisors (see below), whose sum is σ = 3240518400. Its totient is φ = 289903104.

The previous prime is 1122101143. The next prime is 1122101249. The reversal of 1122101220 is 221012211.

1122101220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1122101220² = 2518222295850976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1122101196 and 1122101205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596241 + ... + 598119.

It is an arithmetic number, because the mean of its divisors is an integer number (33755400).

Almost surely, 2^1122101220 is an apocalyptic number.

1122101220 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 1122101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620259200).

1122101220 is an abundant number, since it is smaller than the sum of its proper divisors (2118417180).

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

1122101220 is a wasteful number, since it uses less digits than its factorization.

1122101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2195 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1122101220 is about 33497.7793293824. The cubic root of 1122101220 is about 1039.1478534946.

Adding to 1122101220 its reverse (221012211), we get a palindrome (1343113431).

It can be divided in two parts, 1 and 122101220, that added together give a palindrome (122101221).

The spelling of 1122101220 in words is "one billion, one hundred twenty-two million, one hundred one thousand, two hundred twenty".