22122002121001 has 4 divisors (see below), whose sum is σ = 22123234082052. Its totient is φ = 22120770159952.

The previous prime is 22122002120993. The next prime is 22122002121059. The reversal of 22122002121001 is 10012120022122.

It is a happy number.

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 19114829946601 + 3007172174400 = 4372051^2 + 1734120^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122002121001 - 2³ = 22122002120993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122002121061) 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 3 ways as a sum of consecutive naturals, for example, 615953590 + ... + 615989503.

It is an arithmetic number, because the mean of its divisors is an integer number (5530808520513).

Almost surely, 2^{22122002121001} is an apocalyptic number.

It is an amenable number.

22122002121001 is a deficient number, since it is larger than the sum of its proper divisors (1231961051).

22122002121001 is a wasteful number, since it uses less digits than its factorization.

22122002121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231961050.

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

Adding to 22122002121001 its reverse (10012120022122), we get a palindrome (32134122143123).

The spelling of 22122002121001 in words is "twenty-two trillion, one hundred twenty-two billion, two million, one hundred twenty-one thousand, one".