20164146121 has 4 divisors (see below), whose sum is σ = 23044738432. Its totient is φ = 17283553812.

The previous prime is 20164146109. The next prime is 20164146139. The reversal of 20164146121 is 12164146102.

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 not a de Polignac number, because 20164146121 - 2¹⁹ = 20163621833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20164146121.

It is not an unprimeable number, because it can be changed into a prime (20164146181) 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, 1440296145 + ... + 1440296158.

It is an arithmetic number, because the mean of its divisors is an integer number (5761184608).

Almost surely, 2^20164146121 is an apocalyptic number.

It is an amenable number.

20164146121 is a deficient number, since it is larger than the sum of its proper divisors (2880592311).

20164146121 is an equidigital number, since it uses as much as digits as its factorization.

20164146121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880592310.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 20164146121 in words is "twenty billion, one hundred sixty-four million, one hundred forty-six thousand, one hundred twenty-one".