11020120101211 has 16 divisors (see below), whose sum is σ = 11919382771968. Its totient is φ = 10128252420000.

The previous prime is 11020120101191. The next prime is 11020120101233. The reversal of 11020120101211 is 11210102102011.

It is a happy number.

It is not a de Polignac number, because 11020120101211 - 2⁹ = 11020120100699 is a prime.

It is a super-2 number, since 2×11020120101211² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020120101191 and 11020120101200.

It is not an unprimeable number, because it can be changed into a prime (11020120101511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8502000 + ... + 9712066.

It is an arithmetic number, because the mean of its divisors is an integer number (744961423248).

Almost surely, 2^{11020120101211} is an apocalyptic number.

11020120101211 is a deficient number, since it is larger than the sum of its proper divisors (899262670757).

11020120101211 is a wasteful number, since it uses less digits than its factorization.

11020120101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213122.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11020120101211 its reverse (11210102102011), we get a palindrome (22230222203222).

The spelling of 11020120101211 in words is "eleven trillion, twenty billion, one hundred twenty million, one hundred one thousand, two hundred eleven".