20110021222201 has 8 divisors (see below), whose sum is σ = 20288100419784. Its totient is φ = 19931944032000.

The previous prime is 20110021222189. The next prime is 20110021222223. The reversal of 20110021222201 is 10222212001102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4714756479801 + 15395264742400 = 2171349^2 + 3923680^2 .

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 20110021222201 - 2³⁷ = 19972582268729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110021222231) 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, 25611951 + ... + 26385451.

It is an arithmetic number, because the mean of its divisors is an integer number (2536012552473).

Almost surely, 2^{20110021222201} is an apocalyptic number.

It is an amenable number.

20110021222201 is a deficient number, since it is larger than the sum of its proper divisors (178079197583).

20110021222201 is a wasteful number, since it uses less digits than its factorization.

20110021222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003691.

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

Adding to 20110021222201 its reverse (10222212001102), we get a palindrome (30332233223303).

The spelling of 20110021222201 in words is "twenty trillion, one hundred ten billion, twenty-one million, two hundred twenty-two thousand, two hundred one".