220102302121 has 8 divisors (see below), whose sum is σ = 240919040264. Its totient is φ = 199840677120.

The previous prime is 220102302103. The next prime is 220102302137. The reversal of 220102302121 is 121203201022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12462596496 + 207639705625 = 111636^2 + 455675^2 .

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 220102302121 - 2⁵ = 220102302089 is a prime.

It is a super-2 number, since 2×220102302121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220102302095 and 220102302104.

It is not an unprimeable number, because it can be changed into a prime (220102302151) 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, 138777456 + ... + 138779041.

It is an arithmetic number, because the mean of its divisors is an integer number (30114880033).

Almost surely, 2^220102302121 is an apocalyptic number.

It is an amenable number.

220102302121 is a deficient number, since it is larger than the sum of its proper divisors (20816738143).

220102302121 is a wasteful number, since it uses less digits than its factorization.

220102302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277556571.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220102302121 its reverse (121203201022), we get a palindrome (341305503143).

The spelling of 220102302121 in words is "two hundred twenty billion, one hundred two million, three hundred two thousand, one hundred twenty-one".