2102211222201 has 24 divisors (see below), whose sum is σ = 3070256085000. Its totient is φ = 1385989178112.

The previous prime is 2102211222193. The next prime is 2102211222259. The reversal of 2102211222201 is 1022221122012.

It is a happy number.

2102211222201 is a `hidden beast` number, since 21 + 0 + 221 + 1 + 222 + 201 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14616810000 + 2087594412201 = 120900^2 + 1444851^2 .

It is not a de Polignac number, because 2102211222201 - 2³ = 2102211222193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102211223201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3115716 + ... + 3729893.

It is an arithmetic number, because the mean of its divisors is an integer number (127927336875).

Almost surely, 2^{2102211222201} is an apocalyptic number.

It is an amenable number.

2102211222201 is a deficient number, since it is larger than the sum of its proper divisors (968044862799).

2102211222201 is a wasteful number, since it uses less digits than its factorization.

2102211222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6845993 (or 6845990 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2102211222201 its reverse (1022221122012), we get a palindrome (3124432344213).

The spelling of 2102211222201 in words is "two trillion, one hundred two billion, two hundred eleven million, two hundred twenty-two thousand, two hundred one".