1101210201220 has 24 divisors (see below), whose sum is σ = 2448573271704. Its totient is φ = 414573252096.

The previous prime is 1101210201193. The next prime is 1101210201233. The reversal of 1101210201220 is 221020121011.

It can be written as a sum of positive squares in 4 ways, for example, as 131879375104 + 969330826116 = 363152^2 + 984546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1101210201220.

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, 1619426427 + ... + 1619427106.

It is an arithmetic number, because the mean of its divisors is an integer number (102023886321).

Almost surely, 2^{1101210201220} is an apocalyptic number.

1101210201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101210201220 is an abundant number, since it is smaller than the sum of its proper divisors (1347363070484).

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

1101210201220 is a wasteful number, since it uses less digits than its factorization.

1101210201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238853559 (or 3238853557 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1101210201220 its reverse (221020121011), we get a palindrome (1322230322231).

The spelling of 1101210201220 in words is "one trillion, one hundred one billion, two hundred ten million, two hundred one thousand, two hundred twenty".