20020212222001 has 8 divisors (see below), whose sum is σ = 20226741358824. Its totient is φ = 19813685844480.

The previous prime is 20020212221987. The next prime is 20020212222011. The reversal of 20020212222001 is 10022221202002.

It can be written as a sum of positive squares in 4 ways, for example, as 756900000000 + 19263312222001 = 870000^2 + 4388999^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20020212222001 - 2⁷ = 20020212221873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020212222011) 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, 15957471 + ... + 17166283.

It is an arithmetic number, because the mean of its divisors is an integer number (2528342669853).

Almost surely, 2^{20020212222001} is an apocalyptic number.

It is an amenable number.

20020212222001 is a deficient number, since it is larger than the sum of its proper divisors (206529136823).

20020212222001 is a wasteful number, since it uses less digits than its factorization.

20020212222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379651.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20020212222001 its reverse (10022221202002), we get a palindrome (30042433424003).

The spelling of 20020212222001 in words is "twenty trillion, twenty billion, two hundred twelve million, two hundred twenty-two thousand, one".