2210220101221 has 16 divisors (see below), whose sum is σ = 2494543622400. Its totient is φ = 1939809614400.

The previous prime is 2210220101179. The next prime is 2210220101267. The reversal of 2210220101221 is 1221010220122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2210220101221 - 2³⁹ = 1660464287333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2210220101195 and 2210220101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210220131221) 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, 2867956 + ... + 3556066.

It is an arithmetic number, because the mean of its divisors is an integer number (155908976400).

Almost surely, 2^{2210220101221} is an apocalyptic number.

It is an amenable number.

2210220101221 is a deficient number, since it is larger than the sum of its proper divisors (284323521179).

2210220101221 is a wasteful number, since it uses less digits than its factorization.

2210220101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698220.

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

Adding to 2210220101221 its reverse (1221010220122), we get a palindrome (3431230321343).

The spelling of 2210220101221 in words is "two trillion, two hundred ten billion, two hundred twenty million, one hundred one thousand, two hundred twenty-one".