220120210121001 has 16 divisors (see below), whose sum is σ = 299554926390720. Its totient is φ = 143725848402240.

The previous prime is 220120210120999. The next prime is 220120210121093. The reversal of 220120210121001 is 100121012021022.

It is not a de Polignac number, because 220120210121001 - 2¹ = 220120210120999 is a prime.

It is a super-3 number, since 3×220120210121001³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (220120210121701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212171766 + ... + 1212353343.

It is an arithmetic number, because the mean of its divisors is an integer number (18722182899420).

Almost surely, 2^{220120210121001} is an apocalyptic number.

It is an amenable number.

220120210121001 is a deficient number, since it is larger than the sum of its proper divisors (79434716269719).

220120210121001 is a wasteful number, since it uses less digits than its factorization.

220120210121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424525736.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220120210121001 its reverse (100121012021022), we get a palindrome (320241222142023).

The spelling of 220120210121001 in words is "two hundred twenty trillion, one hundred twenty billion, two hundred ten million, one hundred twenty-one thousand, one".