201220004 has 24 divisors (see below), whose sum is σ = 356575128. Its totient is φ = 99348480.

The previous prime is 201219917. The next prime is 201220043. The reversal of 201220004 is 400022102.

It can be written as a sum of positive squares in 4 ways, for example, as 8065600 + 193154404 = 2840^2 + 13898^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 151664 + ... + 152984.

It is an arithmetic number, because the mean of its divisors is an integer number (14857297).

Almost surely, 2^201220004 is an apocalyptic number.

It is an amenable number.

201220004 is a deficient number, since it is larger than the sum of its proper divisors (155355124).

201220004 is a wasteful number, since it uses less digits than its factorization.

201220004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 201220004 is about 14185.2036996301. The cubic root of 201220004 is about 585.9902423952.

Adding to 201220004 its reverse (400022102), we get a palindrome (601242106).

The spelling of 201220004 in words is "two hundred one million, two hundred twenty thousand, four".