20012130105 has 48 divisors (see below), whose sum is σ = 35294071680. Its totient is φ = 9675508480.

The previous prime is 20012130067. The next prime is 20012130121. The reversal of 20012130105 is 50103121002.

It is not a de Polignac number, because 20012130105 - 2⁶ = 20012130041 is a prime.

It is a super-2 number, since 2×20012130105² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 636229 + ... + 666941.

It is an arithmetic number, because the mean of its divisors is an integer number (735293160).

Almost surely, 2^20012130105 is an apocalyptic number.

It is an amenable number.

20012130105 is a deficient number, since it is larger than the sum of its proper divisors (15281941575).

20012130105 is a wasteful number, since it uses less digits than its factorization.

20012130105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31102 (or 31091 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 20012130105 its reverse (50103121002), we get a palindrome (70115251107).

The spelling of 20012130105 in words is "twenty billion, twelve million, one hundred thirty thousand, one hundred five".