1101001201220 has 24 divisors (see below), whose sum is σ = 2350005845208. Its totient is φ = 433180800000.

The previous prime is 1101001201213. The next prime is 1101001201249. The reversal of 1101001201220 is 221021001011.

It can be written as a sum of positive squares in 4 ways, for example, as 60311501056 + 1040689700164 = 245584^2 + 1020142^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451228781 + ... + 451231220.

It is an arithmetic number, because the mean of its divisors is an integer number (97916910217).

Almost surely, 2^{1101001201220} is an apocalyptic number.

1101001201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101001201220 is an abundant number, since it is smaller than the sum of its proper divisors (1249004643988).

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

1101001201220 is a wasteful number, since it uses less digits than its factorization.

1101001201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902460071 (or 902460069 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1101001201220 its reverse (221021001011), we get a palindrome (1322022202231).

The spelling of 1101001201220 in words is "one trillion, one hundred one billion, one million, two hundred one thousand, two hundred twenty".