220115401 has 4 divisors (see below), whose sum is σ = 240125904. Its totient is φ = 200104900.

The previous prime is 220115383. The next prime is 220115443. The reversal of 220115401 is 104511022.

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 a cyclic number.

It is not a de Polignac number, because 220115401 - 2¹¹ = 220113353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220115471) 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, 10005235 + ... + 10005256.

It is an arithmetic number, because the mean of its divisors is an integer number (60031476).

Almost surely, 2^220115401 is an apocalyptic number.

It is an amenable number.

220115401 is a deficient number, since it is larger than the sum of its proper divisors (20010503).

220115401 is a wasteful number, since it uses less digits than its factorization.

220115401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20010502.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 220115401 is about 14836.2866310947. The cubic root of 220115401 is about 603.7866088648.

Adding to 220115401 its reverse (104511022), we get a palindrome (324626423).

The spelling of 220115401 in words is "two hundred twenty million, one hundred fifteen thousand, four hundred one".