2215034606221 has 2 divisors, whose sum is σ = 2215034606222. Its totient is φ = 2215034606220.

The previous prime is 2215034606173. The next prime is 2215034606237. The reversal of 2215034606221 is 1226064305122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1463952383721 + 751082222500 = 1209939^2 + 866650^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215034606221 - 2¹¹ = 2215034604173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215034606261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107517303110 + 1107517303111.

It is an arithmetic number, because the mean of its divisors is an integer number (1107517303111).

Almost surely, 2^{2215034606221} is an apocalyptic number.

It is an amenable number.

2215034606221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215034606221 is an equidigital number, since it uses as much as digits as its factorization.

2215034606221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 2215034606221 in words is "two trillion, two hundred fifteen billion, thirty-four million, six hundred six thousand, two hundred twenty-one".