21102022120201 has 16 divisors (see below), whose sum is σ = 23244692365440. Its totient is φ = 18996748888320.

The previous prime is 21102022120183. The next prime is 21102022120219. The reversal of 21102022120201 is 10202122020112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21102022120183) and next prime (21102022120219).

It is a cyclic number.

It is not a de Polignac number, because 21102022120201 - 2⁵ = 21102022120169 is a prime.

It is a super-2 number, since 2×21102022120201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102022120261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33987121 + ... + 34602433.

It is an arithmetic number, because the mean of its divisors is an integer number (1452793272840).

Almost surely, 2^{21102022120201} is an apocalyptic number.

It is an amenable number.

21102022120201 is a deficient number, since it is larger than the sum of its proper divisors (2142670245239).

21102022120201 is a wasteful number, since it uses less digits than its factorization.

21102022120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645696.

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

Adding to 21102022120201 its reverse (10202122020112), we get a palindrome (31304144140313).

The spelling of 21102022120201 in words is "twenty-one trillion, one hundred two billion, twenty-two million, one hundred twenty thousand, two hundred one".