22122212120101 has 4 divisors (see below), whose sum is σ = 22122440702604. Its totient is φ = 22121983537600.

The previous prime is 22122212120089. The next prime is 22122212120123. The reversal of 22122212120101 is 10102121222122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19297341979876 + 2824870140225 = 4392874^2 + 1680735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122212120101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122212120161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114146020 + ... + 114339661.

It is an arithmetic number, because the mean of its divisors is an integer number (5530610175651).

Almost surely, 2^{22122212120101} is an apocalyptic number.

It is an amenable number.

22122212120101 is a deficient number, since it is larger than the sum of its proper divisors (228582503).

22122212120101 is an equidigital number, since it uses as much as digits as its factorization.

22122212120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228582502.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22122212120101 its reverse (10102121222122), we get a palindrome (32224333342223).

The spelling of 22122212120101 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty thousand, one hundred one".