11012020222121 has 4 divisors (see below), whose sum is σ = 11012053322244. Its totient is φ = 11011987122000.

The previous prime is 11012020222103. The next prime is 11012020222139. The reversal of 11012020222121 is 12122202021011.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11012020222103) and next prime (11012020222139).

It can be written as a sum of positive squares in 2 ways, for example, as 10150984695721 + 861035526400 = 3186061^2 + 927920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012020222121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11012020222121.

It is not an unprimeable number, because it can be changed into a prime (11012020212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16045910 + ... + 16718111.

It is an arithmetic number, because the mean of its divisors is an integer number (2753013330561).

Almost surely, 2^{11012020222121} is an apocalyptic number.

It is an amenable number.

11012020222121 is a deficient number, since it is larger than the sum of its proper divisors (33100123).

11012020222121 is an equidigital number, since it uses as much as digits as its factorization.

11012020222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33100122.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11012020222121 its reverse (12122202021011), we get a palindrome (23134222243132).

The spelling of 11012020222121 in words is "eleven trillion, twelve billion, twenty million, two hundred twenty-two thousand, one hundred twenty-one".