1101120101220 has 384 divisors, whose sum is σ = 3415452106752. Its totient is φ = 263947264000.

The previous prime is 1101120101171. The next prime is 1101120101231. The reversal of 1101120101220 is 221010211011.

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 = 1101120101196 and 1101120101205.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 343776139 + ... + 343779341.

It is an arithmetic number, because the mean of its divisors is an integer number (8894406528).

Almost surely, 2^{1101120101220} is an apocalyptic number.

1101120101220 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 1101120101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707726053376).

1101120101220 is an abundant number, since it is smaller than the sum of its proper divisors (2314332005532).

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

1101120101220 is a wasteful number, since it uses less digits than its factorization.

1101120101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3449 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1101120101220 its reverse (221010211011), we get a palindrome (1322130312231).

The spelling of 1101120101220 in words is "one trillion, one hundred one billion, one hundred twenty million, one hundred one thousand, two hundred twenty".