11021101321220 has 12 divisors (see below), whose sum is σ = 23144312774604. Its totient is φ = 4408440528480.

The previous prime is 11021101321213. The next prime is 11021101321277. The reversal of 11021101321220 is 2212310112011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7896684490816 + 3124416830404 = 2810104^2 + 1767602^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275527533011 + ... + 275527533050.

It is an arithmetic number, because the mean of its divisors is an integer number (1928692731217).

Almost surely, 2^{11021101321220} is an apocalyptic number.

11021101321220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021101321220 is an abundant number, since it is smaller than the sum of its proper divisors (12123211453384).

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

11021101321220 is a wasteful number, since it uses less digits than its factorization.

11021101321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551055066070 (or 551055066068 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11021101321220 its reverse (2212310112011), we get a palindrome (13233411433231).

The spelling of 11021101321220 in words is "eleven trillion, twenty-one billion, one hundred one million, three hundred twenty-one thousand, two hundred twenty".