20054121 has 4 divisors (see below), whose sum is σ = 26738832. Its totient is φ = 13369412.

The previous prime is 20054119. The next prime is 20054123. The reversal of 20054121 is 12145002.

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 an interprime number because it is at equal distance from previous prime (20054119) and next prime (20054123).

It is a cyclic number.

It is not a de Polignac number, because 20054121 - 2¹ = 20054119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20054121.

It is not an unprimeable number, because it can be changed into a prime (20054123) 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, 3342351 + ... + 3342356.

It is an arithmetic number, because the mean of its divisors is an integer number (6684708).

Almost surely, 2^20054121 is an apocalyptic number.

It is an amenable number.

20054121 is a deficient number, since it is larger than the sum of its proper divisors (6684711).

20054121 is an equidigital number, since it uses as much as digits as its factorization.

20054121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6684710.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20054121 is about 4478.1827787619. The cubic root of 20054121 is about 271.6863861297.

Adding to 20054121 its reverse (12145002), we get a palindrome (32199123).

The spelling of 20054121 in words is "twenty million, fifty-four thousand, one hundred twenty-one".