1011523412105 has 8 divisors (see below), whose sum is σ = 1213891571592. Its totient is φ = 809176411648.

The previous prime is 1011523412057. The next prime is 1011523412143. The reversal of 1011523412105 is 5012143251101.

1011523412105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10747261561 + 1000776150544 = 103669^2 + 1000388^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1011523412105 - 2³⁴ = 994343542921 is a prime.

It is a super-2 number, since 2×1011523412105² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5184392 + ... + 5375961.

It is an arithmetic number, because the mean of its divisors is an integer number (151736446449).

Almost surely, 2^{1011523412105} is an apocalyptic number.

It is an amenable number.

1011523412105 is a deficient number, since it is larger than the sum of its proper divisors (202368159487).

1011523412105 is a wasteful number, since it uses less digits than its factorization.

1011523412105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10579515.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1011523412105 its reverse (5012143251101), we get a palindrome (6023666663206).

The spelling of 1011523412105 in words is "one trillion, eleven billion, five hundred twenty-three million, four hundred twelve thousand, one hundred five".