11012111111021 has 8 divisors (see below), whose sum is σ = 11217423272640. Its totient is φ = 10808691227712.

The previous prime is 11012111110963. The next prime is 11012111111117. The reversal of 11012111111021 is 12011111121011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012111111021 is a prime.

It is a super-2 number, since 2×11012111111021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11012111110987 and 11012111111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012111171021) 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 7 ways as a sum of consecutive naturals, for example, 473057831 + ... + 473081108.

It is an arithmetic number, because the mean of its divisors is an integer number (1402177909080).

Almost surely, 2^{11012111111021} is an apocalyptic number.

It is an amenable number.

11012111111021 is a deficient number, since it is larger than the sum of its proper divisors (205312161619).

11012111111021 is a wasteful number, since it uses less digits than its factorization.

11012111111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946139155.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 11012111111021 its reverse (12011111121011), we get a palindrome (23023222232032).

The spelling of 11012111111021 in words is "eleven trillion, twelve billion, one hundred eleven million, one hundred eleven thousand, twenty-one".