220001020100001 has 12 divisors (see below), whose sum is σ = 363176287149312. Its totient is φ = 125714868628536.

The previous prime is 220001020099999. The next prime is 220001020100011. The reversal of 220001020100001 is 100001020100022.

It is not a de Polignac number, because 220001020100001 - 2¹ = 220001020099999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (220001020100011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1746039842001 + ... + 1746039842126.

It is an arithmetic number, because the mean of its divisors is an integer number (30264690595776).

Almost surely, 2^{220001020100001} is an apocalyptic number.

220001020100001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220001020100001 is a deficient number, since it is larger than the sum of its proper divisors (143175267049311).

220001020100001 is a wasteful number, since it uses less digits than its factorization.

220001020100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492079684140 (or 3492079684137 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 220001020100001 its reverse (100001020100022), we get a palindrome (320002040200023).

The spelling of 220001020100001 in words is "two hundred twenty trillion, one billion, twenty million, one hundred thousand, one".