11020120102121 has 32 divisors (see below), whose sum is σ = 12021886749600. Its totient is φ = 10041002956800.

The previous prime is 11020120101989. The next prime is 11020120102129. The reversal of 11020120102121 is 12120102102011.

It can be written as a sum of positive squares in 16 ways, for example, as 36437083225 + 10983683018896 = 190885^2 + 3314164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020120102121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11020120102096 and 11020120102105.

It is not an unprimeable number, because it can be changed into a prime (11020120102129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1485788405 + ... + 1485795821.

It is an arithmetic number, because the mean of its divisors is an integer number (375683960925).

Almost surely, 2^{11020120102121} is an apocalyptic number.

It is an amenable number.

11020120102121 is a deficient number, since it is larger than the sum of its proper divisors (1001766647479).

11020120102121 is a wasteful number, since it uses less digits than its factorization.

11020120102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10829.

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

Adding to 11020120102121 its reverse (12120102102011), we get a palindrome (23140222204132).

The spelling of 11020120102121 in words is "eleven trillion, twenty billion, one hundred twenty million, one hundred two thousand, one hundred twenty-one".