20080366121 has 4 divisors (see below), whose sum is σ = 20081869572. Its totient is φ = 20078862672.

The previous prime is 20080366109. The next prime is 20080366123. The reversal of 20080366121 is 12166308002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12166308002 = 2 ⋅6083154001.

It can be written as a sum of positive squares in 2 ways, for example, as 16330028521 + 3750337600 = 127789^2 + 61240^2 .

It is a cyclic number.

It is not a de Polignac number, because 20080366121 - 2³⁰ = 19006624297 is a prime.

It is a super-2 number, since 2×20080366121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20080366123) 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, 731510 + ... + 758463.

It is an arithmetic number, because the mean of its divisors is an integer number (5020467393).

Almost surely, 2^20080366121 is an apocalyptic number.

It is an amenable number.

20080366121 is a deficient number, since it is larger than the sum of its proper divisors (1503451).

20080366121 is a wasteful number, since it uses less digits than its factorization.

20080366121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503450.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 20080366121 in words is "twenty billion, eighty million, three hundred sixty-six thousand, one hundred twenty-one".