220121110102301 has 4 divisors (see below), whose sum is σ = 233069410696572. Its totient is φ = 207172809508032.

The previous prime is 220121110102279. The next prime is 220121110102303. The reversal of 220121110102301 is 103201011121022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 178522467112900 + 41598642989401 = 13361230^2 + 6449701^2 .

It is a cyclic number.

It is not a de Polignac number, because 220121110102301 - 2⁶ = 220121110102237 is a prime.

It is a super-2 number, since 2×220121110102301² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 12948300594253 = 220121110102301 / (2 + 2 + 0 + 1 + 2 + 1 + 1 + 1 + 0 + 1 + 0 + 2 + 3 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220121110102301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121110102303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6474150297110 + ... + 6474150297143.

It is an arithmetic number, because the mean of its divisors is an integer number (58267352674143).

Almost surely, 2^{220121110102301} is an apocalyptic number.

It is an amenable number.

220121110102301 is a deficient number, since it is larger than the sum of its proper divisors (12948300594271).

220121110102301 is a wasteful number, since it uses less digits than its factorization.

220121110102301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12948300594270.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 220121110102301 its reverse (103201011121022), we get a palindrome (323322121223323).

The spelling of 220121110102301 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred ten million, one hundred two thousand, three hundred one".