20120012120101 has 4 divisors (see below), whose sum is σ = 20587919378752. Its totient is φ = 19652104861452.

The previous prime is 20120012120081. The next prime is 20120012120119. The reversal of 20120012120101 is 10102121002102.

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 not a de Polignac number, because 20120012120101 - 2²³ = 20120003731493 is a prime.

It is a super-2 number, since 2×20120012120101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120012120141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233953629261 + ... + 233953629346.

It is an arithmetic number, because the mean of its divisors is an integer number (5146979844688).

Almost surely, 2^{20120012120101} is an apocalyptic number.

It is an amenable number.

20120012120101 is a deficient number, since it is larger than the sum of its proper divisors (467907258651).

20120012120101 is an equidigital number, since it uses as much as digits as its factorization.

20120012120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467907258650.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20120012120101 its reverse (10102121002102), we get a palindrome (30222133122203).

The spelling of 20120012120101 in words is "twenty trillion, one hundred twenty billion, twelve million, one hundred twenty thousand, one hundred one".