11020101021221 has 8 divisors (see below), whose sum is σ = 11161983899160. Its totient is φ = 10878619510528.

The previous prime is 11020101021191. The next prime is 11020101021269. The reversal of 11020101021221 is 12212010102011.

It can be written as a sum of positive squares in 4 ways, for example, as 871448388196 + 10148652633025 = 933514^2 + 3185695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11020101021221 - 2¹⁴ = 11020101004837 is a prime.

It is a super-2 number, since 2×11020101021221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020101021196 and 11020101021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020101021421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100286546 + ... + 100396371.

It is an arithmetic number, because the mean of its divisors is an integer number (1395247987395).

Almost surely, 2^{11020101021221} is an apocalyptic number.

It is an amenable number.

11020101021221 is a deficient number, since it is larger than the sum of its proper divisors (141882877939).

11020101021221 is an equidigital number, since it uses as much as digits as its factorization.

11020101021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200683623.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11020101021221 its reverse (12212010102011), we get a palindrome (23232111123232).

The spelling of 11020101021221 in words is "eleven trillion, twenty billion, one hundred one million, twenty-one thousand, two hundred twenty-one".