21220102022201 has 32 divisors (see below), whose sum is σ = 22609964160000. Its totient is φ = 19886451425280.

The previous prime is 21220102022167. The next prime is 21220102022233. The reversal of 21220102022201 is 10222020102212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21220102022201 - 2⁶ = 21220102022137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21220102022201.

It is not an unprimeable number, because it can be changed into a prime (21220102022261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43545785 + ... + 44030393.

It is an arithmetic number, because the mean of its divisors is an integer number (706561380000).

Almost surely, 2^{21220102022201} is an apocalyptic number.

It is an amenable number.

21220102022201 is a deficient number, since it is larger than the sum of its proper divisors (1389862137799).

21220102022201 is a wasteful number, since it uses less digits than its factorization.

21220102022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485057.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21220102022201 its reverse (10222020102212), we get a palindrome (31442122124413).

The spelling of 21220102022201 in words is "twenty-one trillion, two hundred twenty billion, one hundred two million, twenty-two thousand, two hundred one".