11020220202121 has 16 divisors (see below), whose sum is σ = 12310283028736. Its totient is φ = 9799832117376.

The previous prime is 11020220202107. The next prime is 11020220202137. The reversal of 11020220202121 is 12120202202011.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020220202121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020220202095 and 11020220202104.

It is not an unprimeable number, because it can be changed into a prime (11020220208121) 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, 134987745 + ... + 135069358.

It is an arithmetic number, because the mean of its divisors is an integer number (769392689296).

Almost surely, 2^{11020220202121} is an apocalyptic number.

It is an amenable number.

11020220202121 is a deficient number, since it is larger than the sum of its proper divisors (1290062826615).

11020220202121 is a wasteful number, since it uses less digits than its factorization.

11020220202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270057232.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11020220202121 its reverse (12120202202011), we get a palindrome (23140422404132).

The spelling of 11020220202121 in words is "eleven trillion, twenty billion, two hundred twenty million, two hundred two thousand, one hundred twenty-one".