105121502043 has 16 divisors (see below), whose sum is σ = 141877080576. Its totient is φ = 69223776800.

The previous prime is 105121502009. The next prime is 105121502069. The reversal of 105121502043 is 340205121501.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105121502043 is a prime.

It is a super-2 number, since 2×105121502043² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105121503043) 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, 1409593 + ... + 1482293.

It is an arithmetic number, because the mean of its divisors is an integer number (8867317536).

Almost surely, 2^105121502043 is an apocalyptic number.

105121502043 is a deficient number, since it is larger than the sum of its proper divisors (36755578533).

105121502043 is an equidigital number, since it uses as much as digits as its factorization.

105121502043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78594.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 105121502043 its reverse (340205121501), we get a palindrome (445326623544).

The spelling of 105121502043 in words is "one hundred five billion, one hundred twenty-one million, five hundred two thousand, forty-three".