20120110021001 has 4 divisors (see below), whose sum is σ = 20122270927104. Its totient is φ = 20117949114900.

The previous prime is 20120110020971. The next prime is 20120110021027. The reversal of 20120110021001 is 10012001102102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120110021001 is a prime.

It is a super-2 number, since 2×20120110021001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120110021031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1080439085 + ... + 1080457706.

It is an arithmetic number, because the mean of its divisors is an integer number (5030567731776).

Almost surely, 2^{20120110021001} is an apocalyptic number.

It is an amenable number.

20120110021001 is a deficient number, since it is larger than the sum of its proper divisors (2160906103).

20120110021001 is an equidigital number, since it uses as much as digits as its factorization.

20120110021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160906102.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20120110021001 its reverse (10012001102102), we get a palindrome (30132111123103).

The spelling of 20120110021001 in words is "twenty trillion, one hundred twenty billion, one hundred ten million, twenty-one thousand, one".