220010212221 has 4 divisors (see below), whose sum is σ = 293346949632. Its totient is φ = 146673474812.

The previous prime is 220010212211. The next prime is 220010212231. The reversal of 220010212221 is 122212010022.

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 an interprime number because it is at equal distance from previous prime (220010212211) and next prime (220010212231).

It is a cyclic number.

It is not a de Polignac number, because 220010212221 - 2¹⁴ = 220010195837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220010212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220010212211) 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, 36668368701 + ... + 36668368706.

It is an arithmetic number, because the mean of its divisors is an integer number (73336737408).

Almost surely, 2^220010212221 is an apocalyptic number.

It is an amenable number.

220010212221 is a deficient number, since it is larger than the sum of its proper divisors (73336737411).

220010212221 is an equidigital number, since it uses as much as digits as its factorization.

220010212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73336737410.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220010212221 its reverse (122212010022), we get a palindrome (342222222243).

The spelling of 220010212221 in words is "two hundred twenty billion, ten million, two hundred twelve thousand, two hundred twenty-one".