2211002201221 has 16 divisors (see below), whose sum is σ = 2554089563520. Its totient is φ = 1891614983680.

The previous prime is 2211002201209. The next prime is 2211002201321. The reversal of 2211002201221 is 1221022001122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2211002201221 - 2⁵ = 2211002201189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211002201195 and 2211002201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211002201021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1897545 + ... + 2832433.

It is an arithmetic number, because the mean of its divisors is an integer number (159630597720).

Almost surely, 2^{2211002201221} is an apocalyptic number.

It is an amenable number.

2211002201221 is a deficient number, since it is larger than the sum of its proper divisors (343087362299).

2211002201221 is a wasteful number, since it uses less digits than its factorization.

2211002201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947564.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211002201221 its reverse (1221022001122), we get a palindrome (3432024202343).

The spelling of 2211002201221 in words is "two trillion, two hundred eleven billion, two million, two hundred one thousand, two hundred twenty-one".