220212011010221 has 2 divisors, whose sum is σ = 220212011010222. Its totient is φ = 220212011010220.

The previous prime is 220212011010163. The next prime is 220212011010239. The reversal of 220212011010221 is 122010110212022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147819736036996 + 72392274973225 = 12158114^2 + 8508365^2 .

It is a cyclic number.

It is not a de Polignac number, because 220212011010221 - 2¹⁸ = 220212010748077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220212011010221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220212013010221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110106005505110 + 110106005505111.

It is an arithmetic number, because the mean of its divisors is an integer number (110106005505111).

Almost surely, 2^{220212011010221} is an apocalyptic number.

It is an amenable number.

220212011010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

220212011010221 is an equidigital number, since it uses as much as digits as its factorization.

220212011010221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 220212011010221 its reverse (122010110212022), we get a palindrome (342222121222243).

The spelling of 220212011010221 in words is "two hundred twenty trillion, two hundred twelve billion, eleven million, ten thousand, two hundred twenty-one".