20110122201 has 16 divisors (see below), whose sum is σ = 28889106624. Its totient is φ = 12369873984.

The previous prime is 20110122199. The next prime is 20110122233. The reversal of 20110122201 is 10222101102.

It is not a de Polignac number, because 20110122201 - 2¹ = 20110122199 is a prime.

It is a super-3 number, since 3×20110122201³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20110122701) 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 15 ways as a sum of consecutive naturals, for example, 28011 + ... + 202496.

It is an arithmetic number, because the mean of its divisors is an integer number (1805569164).

Almost surely, 2^20110122201 is an apocalyptic number.

It is an amenable number.

20110122201 is a deficient number, since it is larger than the sum of its proper divisors (8778984423).

20110122201 is a wasteful number, since it uses less digits than its factorization.

20110122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232760.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20110122201 its reverse (10222101102), we get a palindrome (30332223303).

It can be divided in two parts, 20110 and 122201, that added together give a triangular number (142311 = T₅₃₃).

The spelling of 20110122201 in words is "twenty billion, one hundred ten million, one hundred twenty-two thousand, two hundred one".