2211032001221 has 2 divisors, whose sum is σ = 2211032001222. Its totient is φ = 2211032001220.

The previous prime is 2211032001127. The next prime is 2211032001247. The reversal of 2211032001221 is 1221002301122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2170274044225 + 40757956996 = 1473185^2 + 201886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211032001221 - 2³⁴ = 2193852132037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211032001221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211032001421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105516000610 + 1105516000611.

It is an arithmetic number, because the mean of its divisors is an integer number (1105516000611).

Almost surely, 2^{2211032001221} is an apocalyptic number.

It is an amenable number.

2211032001221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211032001221 is an equidigital number, since it uses as much as digits as its factorization.

2211032001221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2211032001221 its reverse (1221002301122), we get a palindrome (3432034302343).

The spelling of 2211032001221 in words is "two trillion, two hundred eleven billion, thirty-two million, one thousand, two hundred twenty-one".