11112021001005 has 64 divisors (see below), whose sum is σ = 18666546978816. Its totient is φ = 5637307680000.

The previous prime is 11112021000989. The next prime is 11112021001069. The reversal of 11112021001005 is 50010012021111.

It is not a de Polignac number, because 11112021001005 - 2⁴ = 11112021000989 is a prime.

It is a super-2 number, since 2×11112021001005² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41022622 + ... + 41292608.

It is an arithmetic number, because the mean of its divisors is an integer number (291664796544).

Almost surely, 2^{11112021001005} is an apocalyptic number.

11112021001005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11112021001005 is a deficient number, since it is larger than the sum of its proper divisors (7554525977811).

11112021001005 is a wasteful number, since it uses less digits than its factorization.

11112021001005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271538.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 11112021001005 its reverse (50010012021111), we get a palindrome (61122033022116).

The spelling of 11112021001005 in words is "eleven trillion, one hundred twelve billion, twenty-one million, one thousand, five".