220110121001 has 16 divisors (see below), whose sum is σ = 226534978704. Its totient is φ = 213801928704.

The previous prime is 220110120949. The next prime is 220110121037. The reversal of 220110121001 is 100121011022.

It can be written as a sum of positive squares in 8 ways, for example, as 109521283600 + 110588837401 = 330940^2 + 332549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220110121001 is a prime.

It is a super-2 number, since 2×220110121001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220110121051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210115 + ... + 1380071.

It is an arithmetic number, because the mean of its divisors is an integer number (14158436169).

Almost surely, 2^220110121001 is an apocalyptic number.

It is an amenable number.

220110121001 is a deficient number, since it is larger than the sum of its proper divisors (6424857703).

220110121001 is a wasteful number, since it uses less digits than its factorization.

220110121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170300.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 220110121001 its reverse (100121011022), we get a palindrome (320231132023).

The spelling of 220110121001 in words is "two hundred twenty billion, one hundred ten million, one hundred twenty-one thousand, one".