21050130124 has 24 divisors (see below), whose sum is σ = 38536192800. Its totient is φ = 10047945600.

The previous prime is 21050130121. The next prime is 21050130137. The reversal of 21050130124 is 42103105012.

It is not an unprimeable number, because it can be changed into a prime (21050130121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009152 + ... + 1029799.

It is an arithmetic number, because the mean of its divisors is an integer number (1605674700).

Almost surely, 2^21050130124 is an apocalyptic number.

It is an amenable number.

21050130124 is a deficient number, since it is larger than the sum of its proper divisors (17486062676).

21050130124 is a wasteful number, since it uses less digits than its factorization.

21050130124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039073 (or 2039071 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21050130124 its reverse (42103105012), we get a palindrome (63153235136).

The spelling of 21050130124 in words is "twenty-one billion, fifty million, one hundred thirty thousand, one hundred twenty-four".