1011021112005 has 16 divisors (see below), whose sum is σ = 1638110158080. Its totient is φ = 532385800128.

The previous prime is 1011021111979. The next prime is 1011021112007. The reversal of 1011021112005 is 5002111201101.

It is not a de Polignac number, because 1011021112005 - 2²⁶ = 1010954003141 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011021112007) 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, 426590002 + ... + 426592371.

It is an arithmetic number, because the mean of its divisors is an integer number (102381884880).

Almost surely, 2^{1011021112005} is an apocalyptic number.

1011021112005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1011021112005 is a deficient number, since it is larger than the sum of its proper divisors (627089046075).

1011021112005 is an equidigital number, since it uses as much as digits as its factorization.

1011021112005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853182460.

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

Adding to 1011021112005 its reverse (5002111201101), we get a palindrome (6013132313106).

The spelling of 1011021112005 in words is "one trillion, eleven billion, twenty-one million, one hundred twelve thousand, five".