20120101011001 has 8 divisors (see below), whose sum is σ = 20345128703424. Its totient is φ = 19895579569200.

The previous prime is 20120101010987. The next prime is 20120101011061. The reversal of 20120101011001 is 10011010102102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120101011001 - 2¹³ = 20120101002809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120101011061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126482725 + ... + 126641698.

It is an arithmetic number, because the mean of its divisors is an integer number (2543141087928).

Almost surely, 2^{20120101011001} is an apocalyptic number.

It is an amenable number.

20120101011001 is a deficient number, since it is larger than the sum of its proper divisors (225027692423).

20120101011001 is a wasteful number, since it uses less digits than its factorization.

20120101011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253125311.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20120101011001 its reverse (10011010102102), we get a palindrome (30131111113103).

The spelling of 20120101011001 in words is "twenty trillion, one hundred twenty billion, one hundred one million, eleven thousand, one".