20110021220201 has 24 divisors (see below), whose sum is σ = 22354330509000. Its totient is φ = 18075159660800.

The previous prime is 20110021220183. The next prime is 20110021220203. The reversal of 20110021220201 is 10202212001102.

It can be written as a sum of positive squares in 4 ways, for example, as 58611925801 + 20051409294400 = 242099^2 + 4477880^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20110021220201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110021220203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176005271 + ... + 176119491.

It is an arithmetic number, because the mean of its divisors is an integer number (931430437875).

Almost surely, 2^{20110021220201} is an apocalyptic number.

It is an amenable number.

20110021220201 is a deficient number, since it is larger than the sum of its proper divisors (2244309288799).

20110021220201 is a wasteful number, since it uses less digits than its factorization.

20110021220201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130681 (or 130670 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20110021220201 its reverse (10202212001102), we get a palindrome (30312233221303).

The spelling of 20110021220201 in words is "twenty trillion, one hundred ten billion, twenty-one million, two hundred twenty thousand, two hundred one".