220312101 has 24 divisors (see below), whose sum is σ = 317731680. Its totient is φ = 135616096.

The previous prime is 220312069. The next prime is 220312109. The reversal of 220312101 is 101213022.

It is not a de Polignac number, because 220312101 - 2⁵ = 220312069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220312109) 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, 43630 + ... + 48416.

It is an arithmetic number, because the mean of its divisors is an integer number (13238820).

Almost surely, 2^220312101 is an apocalyptic number.

It is an amenable number.

220312101 is a deficient number, since it is larger than the sum of its proper divisors (97419579).

220312101 is a wasteful number, since it uses less digits than its factorization.

220312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4865 (or 4842 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 220312101 is about 14842.9141680467. The cubic root of 220312101 is about 603.9664076825.

Adding to 220312101 its reverse (101213022), we get a palindrome (321525123).

The spelling of 220312101 in words is "two hundred twenty million, three hundred twelve thousand, one hundred one".