220121000205 has 8 divisors (see below), whose sum is σ = 352193600352. Its totient is φ = 117397866768.

The previous prime is 220121000149. The next prime is 220121000243. The reversal of 220121000205 is 502000121022.

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

It is not a de Polignac number, because 220121000205 - 2¹⁰ = 220120999181 is a prime.

It is a super-2 number, since 2×220121000205² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 14674733347 = 220121000205 / (2 + 2 + 0 + 1 + 2 + 1 + 0 + 0 + 0 + 2 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7337366659 + ... + 7337366688.

It is an arithmetic number, because the mean of its divisors is an integer number (44024200044).

Almost surely, 2^220121000205 is an apocalyptic number.

It is an amenable number.

220121000205 is a deficient number, since it is larger than the sum of its proper divisors (132072600147).

220121000205 is a wasteful number, since it uses less digits than its factorization.

220121000205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14674733355.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 220121000205 its reverse (502000121022), we get a palindrome (722121121227).

The spelling of 220121000205 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred five", and thus it is an aban number.