220401005 has 16 divisors (see below), whose sum is σ = 305498304. Its totient is φ = 150862080.

The previous prime is 220400981. The next prime is 220401011. The reversal of 220401005 is 500104022.

220401005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220401005 - 2¹² = 220396909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116927 + ... + 118796.

It is an arithmetic number, because the mean of its divisors is an integer number (19093644).

Almost surely, 2^220401005 is an apocalyptic number.

It is an amenable number.

220401005 is a deficient number, since it is larger than the sum of its proper divisors (85097299).

220401005 is a wasteful number, since it uses less digits than its factorization.

220401005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235756.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 220401005 is about 14845.9086956643. The cubic root of 220401005 is about 604.0476376108.

Adding to 220401005 its reverse (500104022), we get a palindrome (720505027).

The spelling of 220401005 in words is "two hundred twenty million, four hundred one thousand, five".