11012212021121 has 16 divisors (see below), whose sum is σ = 11788623522000. Its totient is φ = 10250690316288.

The previous prime is 11012212021099. The next prime is 11012212021147. The reversal of 11012212021121 is 12112021221011.

It can be written as a sum of positive squares in 8 ways, for example, as 7659750400 + 11004552270721 = 87520^2 + 3317311^2 .

It is a cyclic number.

It is not a de Polignac number, because 11012212021121 - 2¹⁰ = 11012212020097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 11012212021121.

It is not an unprimeable number, because it can be changed into a prime (11012212041121) 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 15 ways as a sum of consecutive naturals, for example, 8739206 + ... + 9919583.

It is an arithmetic number, because the mean of its divisors is an integer number (736788970125).

Almost surely, 2^{11012212021121} is an apocalyptic number.

It is an amenable number.

11012212021121 is a deficient number, since it is larger than the sum of its proper divisors (776411500879).

11012212021121 is a wasteful number, since it uses less digits than its factorization.

11012212021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18659188.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11012212021121 its reverse (12112021221011), we get a palindrome (23124233242132).

The spelling of 11012212021121 in words is "eleven trillion, twelve billion, two hundred twelve million, twenty-one thousand, one hundred twenty-one".