220200212220121 has 4 divisors (see below), whose sum is σ = 251657385394432. Its totient is φ = 188743039045812.

The previous prime is 220200212220071. The next prime is 220200212220127. The reversal of 220200212220121 is 121022212002022.

220200212220121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220200212220121 - 2¹⁵ = 220200212187353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220200212220127) 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, 15728586587145 + ... + 15728586587158.

It is an arithmetic number, because the mean of its divisors is an integer number (62914346348608).

Almost surely, 2^{220200212220121} is an apocalyptic number.

It is an amenable number.

220200212220121 is a deficient number, since it is larger than the sum of its proper divisors (31457173174311).

220200212220121 is an equidigital number, since it uses as much as digits as its factorization.

220200212220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31457173174310.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220200212220121 its reverse (121022212002022), we get a palindrome (341222424222143).

The spelling of 220200212220121 in words is "two hundred twenty trillion, two hundred billion, two hundred twelve million, two hundred twenty thousand, one hundred twenty-one".