20011220022101 has 96 divisors (see below), whose sum is σ = 25959723955200. Its totient is φ = 15249731777280.

The previous prime is 20011220022019. The next prime is 20011220022103. The reversal of 20011220022101 is 10122002211002.

It is not a de Polignac number, because 20011220022101 - 2³⁰ = 20010146280277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011220022103) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6808851890 + ... + 6808854828.

It is an arithmetic number, because the mean of its divisors is an integer number (270413791200).

Almost surely, 2^{20011220022101} is an apocalyptic number.

It is an amenable number.

20011220022101 is a deficient number, since it is larger than the sum of its proper divisors (5948503933099).

20011220022101 is a wasteful number, since it uses less digits than its factorization.

20011220022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327 (or 4320 counting only the distinct ones).

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

Adding to 20011220022101 its reverse (10122002211002), we get a palindrome (30133222233103).

The spelling of 20011220022101 in words is "twenty trillion, eleven billion, two hundred twenty million, twenty-two thousand, one hundred one".