20120110010001 has 12 divisors (see below), whose sum is σ = 29496148008912. Its totient is φ = 13213206573336.

The previous prime is 20120110009991. The next prime is 20120110010029. The reversal of 20120110010001 is 10001001102102.

It is a happy number.

It is not a de Polignac number, because 20120110010001 - 2⁵ = 20120110009969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20120110010041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16683341031 + ... + 16683342236.

It is an arithmetic number, because the mean of its divisors is an integer number (2458012334076).

Almost surely, 2^{20120110010001} is an apocalyptic number.

It is an amenable number.

20120110010001 is a deficient number, since it is larger than the sum of its proper divisors (9376037998911).

20120110010001 is a wasteful number, since it uses less digits than its factorization.

20120110010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33366683340 (or 33366683337 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20120110010001 its reverse (10001001102102), we get a palindrome (30121111112103).

The spelling of 20120110010001 in words is "twenty trillion, one hundred twenty billion, one hundred ten million, ten thousand, one".