11012112011021 has 4 divisors (see below), whose sum is σ = 12013213102944. Its totient is φ = 10011010919100.

The previous prime is 11012112011003. The next prime is 11012112011027. The reversal of 11012112011021 is 12011021121011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11012112011021 - 2⁶ = 11012112010957 is a prime.

It is a super-2 number, since 2×11012112011021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012112010987 and 11012112011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012112011027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500550545945 + ... + 500550545966.

It is an arithmetic number, because the mean of its divisors is an integer number (3003303275736).

Almost surely, 2^{11012112011021} is an apocalyptic number.

11012112011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012112011021 is a deficient number, since it is larger than the sum of its proper divisors (1001101091923).

11012112011021 is a wasteful number, since it uses less digits than its factorization.

11012112011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001101091922.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11012112011021 its reverse (12011021121011), we get a palindrome (23023133132032).

The spelling of 11012112011021 in words is "eleven trillion, twelve billion, one hundred twelve million, eleven thousand, twenty-one".