105120621154345 has 16 divisors (see below), whose sum is σ = 127046832913728. Its totient is φ = 83497219096000.

The previous prime is 105120621154331. The next prime is 105120621154379. The reversal of 105120621154345 is 543451126021501.

It is not a de Polignac number, because 105120621154345 - 2¹⁹ = 105120620630057 is a prime.

It is a super-2 number, since 2×105120621154345² (a number of 29 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 = 105120621154298 and 105120621154307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131718019 + ... + 132513688.

It is an arithmetic number, because the mean of its divisors is an integer number (7940427057108).

Almost surely, 2^{105120621154345} is an apocalyptic number.

It is an amenable number.

105120621154345 is a deficient number, since it is larger than the sum of its proper divisors (21926211759383).

105120621154345 is a wasteful number, since it uses less digits than its factorization.

105120621154345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264232280.

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 105120621154345 its reverse (543451126021501), we get a palindrome (648571747175846).

The spelling of 105120621154345 in words is "one hundred five trillion, one hundred twenty billion, six hundred twenty-one million, one hundred fifty-four thousand, three hundred forty-five".