11020222021221 has 72 divisors (see below), whose sum is σ = 18713466194904. Its totient is φ = 6230533478400.

The previous prime is 11020222021219. The next prime is 11020222021223. The reversal of 11020222021221 is 12212022202011.

It is a happy number.

11020222021221 is a `hidden beast` number, since 1 + 1 + 0 + 202 + 220 + 21 + 221 = 666.

11020222021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11020222021219) and next prime (11020222021223).

It can be written as a sum of positive squares in 4 ways, for example, as 7552526290596 + 3467695730625 = 2748186^2 + 1862175^2 .

It is not a de Polignac number, because 11020222021221 - 2¹ = 11020222021219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11020222021194 and 11020222021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020222021223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63740925 + ... + 63913581.

It is an arithmetic number, because the mean of its divisors is an integer number (259909252707).

Almost surely, 2^{11020222021221} is an apocalyptic number.

It is an amenable number.

11020222021221 is a deficient number, since it is larger than the sum of its proper divisors (7693244173683).

11020222021221 is a wasteful number, since it uses less digits than its factorization.

11020222021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174211 (or 174201 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11020222021221 its reverse (12212022202011), we get a palindrome (23232244223232).

The spelling of 11020222021221 in words is "eleven trillion, twenty billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-one".