220120221001 has 16 divisors (see below), whose sum is σ = 229607991360. Its totient is φ = 210835235520.

The previous prime is 220120220987. The next prime is 220120221047. The reversal of 220120221001 is 100122021022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220120221001 - 2¹¹ = 220120218953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220120221091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4559055 + ... + 4607083.

It is an arithmetic number, because the mean of its divisors is an integer number (14350499460).

Almost surely, 2^220120221001 is an apocalyptic number.

It is an amenable number.

220120221001 is a deficient number, since it is larger than the sum of its proper divisors (9487770359).

220120221001 is a wasteful number, since it uses less digits than its factorization.

220120221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50136.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220120221001 its reverse (100122021022), we get a palindrome (320242242023).

The spelling of 220120221001 in words is "two hundred twenty billion, one hundred twenty million, two hundred twenty-one thousand, one".