220101001231 has 8 divisors (see below), whose sum is σ = 220823481744. Its totient is φ = 219378644160.

The previous prime is 220101001229. The next prime is 220101001247. The reversal of 220101001231 is 132100101022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220101001231 - 2¹ = 220101001229 is a prime.

It is a super-2 number, since 2×220101001231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220101001201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4742961 + ... + 4789141.

It is an arithmetic number, because the mean of its divisors is an integer number (27602935218).

Almost surely, 2^220101001231 is an apocalyptic number.

220101001231 is a deficient number, since it is larger than the sum of its proper divisors (722480513).

220101001231 is a wasteful number, since it uses less digits than its factorization.

220101001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61721.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 220101001231 its reverse (132100101022), we get a palindrome (352201102253).

The spelling of 220101001231 in words is "two hundred twenty billion, one hundred one million, one thousand, two hundred thirty-one".