105123421225131 has 4 divisors (see below), whose sum is σ = 140164561633512. Its totient is φ = 70082280816752.

The previous prime is 105123421225127. The next prime is 105123421225177. The reversal of 105123421225131 is 131522124321501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105123421225131 - 2² = 105123421225127 is a prime.

It is a super-2 number, since 2×105123421225131² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105123421225092 and 105123421225101.

It is not an unprimeable number, because it can be changed into a prime (105123421225331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17520570204186 + ... + 17520570204191.

It is an arithmetic number, because the mean of its divisors is an integer number (35041140408378).

Almost surely, 2^{105123421225131} is an apocalyptic number.

105123421225131 is a deficient number, since it is larger than the sum of its proper divisors (35041140408381).

105123421225131 is an equidigital number, since it uses as much as digits as its factorization.

105123421225131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35041140408380.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 105123421225131 its reverse (131522124321501), we get a palindrome (236645545546632).

The spelling of 105123421225131 in words is "one hundred five trillion, one hundred twenty-three billion, four hundred twenty-one million, two hundred twenty-five thousand, one hundred thirty-one".