22002122112021 has 6 divisors (see below), whose sum is σ = 31780843050710. Its totient is φ = 14668081408008.

The previous prime is 22002122111969. The next prime is 22002122112037. The reversal of 22002122112021 is 12021122120022.

It is a happy number.

22002122112021 is a `hidden beast` number, since 2 + 200 + 212 + 211 + 20 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15956941008996 + 6045181103025 = 3994614^2 + 2458695^2 .

It is not a de Polignac number, because 22002122112021 - 2¹⁵ = 22002122079253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002122111985 and 22002122112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002122112121) 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 5 ways as a sum of consecutive naturals, for example, 1222340117326 + ... + 1222340117343.

Almost surely, 2^{22002122112021} is an apocalyptic number.

It is an amenable number.

22002122112021 is a deficient number, since it is larger than the sum of its proper divisors (9778720938689).

22002122112021 is a wasteful number, since it uses less digits than its factorization.

22002122112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444680234675 (or 2444680234672 counting only the distinct ones).

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

Adding to 22002122112021 its reverse (12021122120022), we get a palindrome (34023244232043).

The spelling of 22002122112021 in words is "twenty-two trillion, two billion, one hundred twenty-two million, one hundred twelve thousand, twenty-one".