22002122121 has 8 divisors (see below), whose sum is σ = 33527043264. Its totient is φ = 12572641200.

The previous prime is 22002122083. The next prime is 22002122167. The reversal of 22002122121 is 12122120022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22002122121 - 2¹³ = 22002113929 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22002122121.

It is not an unprimeable number, because it can be changed into a prime (22002122171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 523860030 + ... + 523860071.

It is an arithmetic number, because the mean of its divisors is an integer number (4190880408).

Almost surely, 2^22002122121 is an apocalyptic number.

22002122121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22002122121 is a deficient number, since it is larger than the sum of its proper divisors (11524921143).

22002122121 is a wasteful number, since it uses less digits than its factorization.

22002122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047720111.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22002122121 its reverse (12122120022), we get a palindrome (34124242143).

The spelling of 22002122121 in words is "twenty-two billion, two million, one hundred twenty-two thousand, one hundred twenty-one".