220201101 has 24 divisors (see below), whose sum is σ = 321676160. Its totient is φ = 145146816.

The previous prime is 220201099. The next prime is 220201117. The reversal of 220201101 is 101102022.

It is not a de Polignac number, because 220201101 - 2¹ = 220201099 is a prime.

It is a super-2 number, since 2×220201101² = 96977049763224402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538185 + ... + 538593.

Almost surely, 2^220201101 is an apocalyptic number.

It is an amenable number.

220201101 is a deficient number, since it is larger than the sum of its proper divisors (101475059).

220201101 is a wasteful number, since it uses less digits than its factorization.

220201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 220201101 is about 14839.1745390369. The cubic root of 220201101 is about 603.8649583702.

Adding to 220201101 its reverse (101102022), we get a palindrome (321303123).

The spelling of 220201101 in words is "two hundred twenty million, two hundred one thousand, one hundred one".