2105121451235 has 8 divisors (see below), whose sum is σ = 2755795354416. Its totient is φ = 1530997419040.

The previous prime is 2105121451231. The next prime is 2105121451241. The reversal of 2105121451235 is 5321541215012.

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

It is not a de Polignac number, because 2105121451235 - 2² = 2105121451231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105121451231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19137467684 + ... + 19137467793.

It is an arithmetic number, because the mean of its divisors is an integer number (344474419302).

Almost surely, 2^{2105121451235} is an apocalyptic number.

2105121451235 is a deficient number, since it is larger than the sum of its proper divisors (650673903181).

2105121451235 is a wasteful number, since it uses less digits than its factorization.

2105121451235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38274935493.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 2105121451235 its reverse (5321541215012), we get a palindrome (7426662666247).

The spelling of 2105121451235 in words is "two trillion, one hundred five billion, one hundred twenty-one million, four hundred fifty-one thousand, two hundred thirty-five".