220001212200001 has 2 divisors, whose sum is σ = 220001212200002. Its totient is φ = 220001212200000.

The previous prime is 220001212199983. The next prime is 220001212200017. The reversal of 220001212200001 is 100002212100022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142059700454400 + 77941511745601 = 11918880^2 + 8828449^2 .

It is a cyclic number.

It is not a de Polignac number, because 220001212200001 - 2²⁹ = 220000675329089 is a prime.

It is not a weakly prime, because it can be changed into another prime (220001212200701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000606100000 + 110000606100001.

It is an arithmetic number, because the mean of its divisors is an integer number (110000606100001).

Almost surely, 2^{220001212200001} is an apocalyptic number.

It is an amenable number.

220001212200001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220001212200001 is an equidigital number, since it uses as much as digits as its factorization.

220001212200001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220001212200001 its reverse (100002212100022), we get a palindrome (320003424300023).

The spelling of 220001212200001 in words is "two hundred twenty trillion, one billion, two hundred twelve million, two hundred thousand, one".