11020111112121 has 16 divisors (see below), whose sum is σ = 14971969108800. Its totient is φ = 7207520116160.

The previous prime is 11020111112093. The next prime is 11020111112167. The reversal of 11020111112121 is 12121111102011.

It is a cyclic number.

It is not a de Polignac number, because 11020111112121 - 2¹³ = 11020111103929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11020111112121.

It is not an unprimeable number, because it can be changed into a prime (11020111112191) 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, 987471 + ... + 4797428.

It is an arithmetic number, because the mean of its divisors is an integer number (935748069300).

Almost surely, 2^{11020111112121} is an apocalyptic number.

It is an amenable number.

11020111112121 is a deficient number, since it is larger than the sum of its proper divisors (3951857996679).

11020111112121 is a wasteful number, since it uses less digits than its factorization.

11020111112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5796936.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11020111112121 its reverse (12121111102011), we get a palindrome (23141222214132).

The spelling of 11020111112121 in words is "eleven trillion, twenty billion, one hundred eleven million, one hundred twelve thousand, one hundred twenty-one".