20154220003 has 2 divisors, whose sum is σ = 20154220004. Its totient is φ = 20154220002.

The previous prime is 20154219997. The next prime is 20154220039. The reversal of 20154220003 is 30002245102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20154220003 - 2⁵ = 20154219971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20154920003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077110001 + 10077110002.

It is an arithmetic number, because the mean of its divisors is an integer number (10077110002).

Almost surely, 2^20154220003 is an apocalyptic number.

20154220003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154220003 is an equidigital number, since it uses as much as digits as its factorization.

20154220003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 20154220003 its reverse (30002245102), we get a palindrome (50156465105).

The spelling of 20154220003 in words is "twenty billion, one hundred fifty-four million, two hundred twenty thousand, three".