21050130123106 has 32 divisors (see below), whose sum is σ = 38209806093312. Its totient is φ = 8490549557760.

The previous prime is 21050130123079. The next prime is 21050130123107. The reversal of 21050130123106 is 60132103105012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21050130123107) 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, 6558735 + ... + 9225901.

It is an arithmetic number, because the mean of its divisors is an integer number (1194056440416).

Almost surely, 2^{21050130123106} is an apocalyptic number.

21050130123106 is a deficient number, since it is larger than the sum of its proper divisors (17159675970206).

21050130123106 is a wasteful number, since it uses less digits than its factorization.

21050130123106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700354.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 21050130123106 its reverse (60132103105012), we get a palindrome (81182233228118).

The spelling of 21050130123106 in words is "twenty-one trillion, fifty billion, one hundred thirty million, one hundred twenty-three thousand, one hundred six".