21050130123130 has 32 divisors (see below), whose sum is σ = 39220364851200. Its totient is φ = 8124816662592.

The previous prime is 21050130123107. The next prime is 21050130123131. The reversal of 21050130123130 is 3132103105012.

It is not an unprimeable number, because it can be changed into a prime (21050130123131) 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, 21341740 + ... + 22306279.

It is an arithmetic number, because the mean of its divisors is an integer number (1225636401600).

Almost surely, 2^{21050130123130} is an apocalyptic number.

21050130123130 is a deficient number, since it is larger than the sum of its proper divisors (18170234728070).

21050130123130 is a wasteful number, since it uses less digits than its factorization.

21050130123130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43649718.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 21050130123130 its reverse (3132103105012), we get a palindrome (24182233228142).

The spelling of 21050130123130 in words is "twenty-one trillion, fifty billion, one hundred thirty million, one hundred twenty-three thousand, one hundred thirty".